Have been on depo prevera shot for three years and just recently got a urinary tract infection. Was taking sulfameth/trimethoprim for antibiotics. I took.two a day for three days and had sex with my partner Saturday and took my last antibiotic on Friday. We did not use a condom and I was just curious to know if my antibiotics have affected my birth control?
Hello dear.understand your concern. Yes some Chat Doctor. .interfere with deposit function. So as you took sulfonamides there may be chance of decrease in effectiveness. These type of antibiotics decrease re-circulation of hormone/progesterone in body or increase breakdown/increase metabolism of hormone in the liver result in decrease effectivenessSometime illness and Antibiotics affect the hormonal levels and affect the function demo shot. AS both antibiotic and illness disturbs the hormone level, there may be chance of menstrual irregularity. But not in all case it affects the effectiveness of contraception. I advise you to wait for period to come. IF period will delay by 10-12 days then GO FOR PREGNANCY CONFIRMATION BY URINE PREGNANCY TEST AND OR BLOOD Chat Doctor to rule out the pregnancy. If you will be come pregnant still you can terminate by using abortion pill under the advice of gynecologist. Hope this will guide you. Best regards.