Did you know that antibiotics could affect the menstrual cycle? Indeed, most of them can have an effect on menstrual periods, with some reporting delays. Find out more about the connections between antibiotics and the menstrual cycle below. Your Regular Cycle During the first 14 days of a 28-day menstrual cycle, your follicle will start to grow and kick-start the initial production of additional estrogen. It will start to make the endometrium lining thicker. When ovulation commences, the estrogen hormone will be joined by the progesterone hormone from the corpus luteum to make the endometrium mature and thicker. How Antibiotics
Antibiotics and menstrual cycle
Hi, I recently was prescribed antibiotics for my uti. My period was expected on August 13, but I am 6 days late now. Could this be because of the antibiotics. Note: I got the antibiotics a week before my expected period.
Hello Angie, yes the antibiotics is the cause for the delay.
My gf have been experiencing short flow of her menstrual period. It’ll come and just flow for maybe one or two days as against three or four days normal flow and she’s not taking any anti biotics. Please what could be the cause(s) and the solution(s) to that?
Hello there Chuks, many women experience a change in their cycle from time to time. This could be as a result of stress, hormonal changes, etc.
HI, I HAD MY LAST PERIOD FROM 15/7-`2/8. DR. PRESCRIBED 2 TYPES OF ANTIBIOTIC FOR ME AS SHE SUSPECTED I HAVE ENDOMETRIOSIS SINCE MY PERIOD LASTS LONG (AROUND 19 DAYS).
AFTER TAKING THE ANTIBIOTIC, MY PERIOD STOPPED ON 3/8.
WHEN CAN I PREDICT MY NEXT MENSTRUAL ?
MY USUAL CYCLE IS BETWEEN 29 – 32 DAYS
Hello Lynn Wee, please use the below link to calculate your next menstrual period: https://womanjunction.com/
I saw my period on Wednesday and I unprotected sex on Thursday and Friday night with my bf and i took postinor 2 on Saturday morning, the question is if I am safe. Thanks
Hi there Temmy, once contraceptive was taken with 72 hours then conception should not have taken place.
I am 8 days late and recently have been in a treatment for 1st degree and 2nd degree burn, Which included antibiotic injections. Could this be the reason my period is delayed.
Hello Amanda, yes, this might be the reason why your period is delayed.
I am currently on depo shots for birth control and was recently treated for tonsillitis. During taking the penicillin for treatment I got my period for the first time in 5 months. Is this due to the meds? I’ve only been taking the penicillin for 4 days.
Hi there Alexis, I cannot determine if this is a period or not.
Can I get pregnant while taking antibiotics?
Hi there Maggy, thanks for your question, kindly see link below:
https://womanjunction.com/antibiotics-increase-risk-miscarriage/
Saw my period last on the 6th of July and up till now have not seen it just worried did a pregnancy test was negative but I took amplicox beecham is it the cause of the delay because all the signs of my period are there.
Hello Zee, yes the use of the antibiotics might be delaying your period.
I have a question, I did an abortion on may 28 and after that week I had an unprotected sex twice but I used postinor 2 and ever since then till now have not seen my period. What should I do, this is July 6 even though I am treating an infection.
Hello Temmy, your comment hints that you are currently taking an antibiotic for an infection, please note that the use of the antibiotics might be delaying your period.
Hello, I’ve been prescribed Doxycycline Hyclate 100 mg tablet for my acne, taken twice a day with food. This is approx almost my second week of taking it regularly. I am on a birth control pill, also have been taking it regularly and have used condom as a second form of protection. I usually get my period On a Tuesday or Wednesday but it’s not always spot on but no period yet… What do your think?
Hello Abbi, Doxycycline Hyclate might be the cause for your delayed period.
Hi there,
I was on injections, 1 in a week for 3 weeks and took metronizadole and doxy in the first week of injection. after 2nd injection I had sex and my period is late? could it be the medicine and if so how long will it be delayed? thanks
Hello Priscilla, yes the injections might have caused the delay.
Hi. On the 10th July I went to see my doctor as I had muscle spasm. He gave me an injection for that. On the 16th I had unprotected intercourse. My period was supposed to come from Thursday now its delayed. Could it be the injection that delayed it or what. I normally have regular periods.
Hello D, you did not mention the type of injection administered. However given the delay in the commencement of your period post injection you should consult your doctor about this.
I am 2 weeks late and I have stopped the antibiotics a week ago
How soon will it be before I start again
I had sex 3-5 days before my last period and the started antibiotics 3 weeks after sex and 2 week after my period
Hi there Amanda, if period does not return within a week’s time then take a pregnancy test.
Hi! I’m expecting my period last July 23 and I’m 6 days delayed. I was given antibiotics for 7 days. Is it the cause of my delay?
Hello Trish, yes this is likely the cause of your delay.
Is it the reason behind my 6-days delayed menstruation? I was confined last July 2 and was discharged July 6, and I was injected Cefuroxime 3x a day for Kidney infection during those days. After having discharged I was advised to take Cefuroxime again orally for 7 days. And after those medication I have unprotected sex since I am in regular period and assume that I am not fertile anymore, I am tracking my period, and we’re using calendar method. I have also taken metronidazole for infection on July 21. My expected period is on July 20. and until now i did not arrived. What will I do? Im pretty worried.
Hello Sharm the taking of such antibiotic might be the reason for your delayed period.
I’ve already missed my period and the pregnancy test says positive. But I somehow hope that the result is brought by my UTI.
Hi! My doctor gave my flagyl for 7 days (last July 9-15) I’m expecting my period last July 18 I’m 6 days delayed. I have a regular cycle. It is because of the antibiotic why I’m delayed?
Hi there Ann, yes the antibiotic is more than likely the reason for your delay.