Family Planning Plus

It is important to use a reliable, effective birth control method while on INH. INH is classifed as a pregnancy category C drug by the FDA. According to the FDA,  the definition of a category C drug is  that  “animal reproduction studies have shown an adverse effect on the fetus and there are no adequate and well-controlled studies in humans, but potential benefits may warrant use of the drug in pregnant women despite potential risks.”  So, if at all possible, try to avoid pregnancy until your INH therapy  is completed.

It is unlikely that you would  become pregnant from a small amount of semen getting on the outside of your vulva.  Pregnancy is more likely to result when the sperm are ejaculated directly into the vagina. Taking Plan B was a good option. Keep in mind, that after taking Plan B you may experience some irregular bleeding or spotting. Your next period may be a little earlier or later than usual, and it could be lighter, heavier, or spottier than usual.  You should have a period within the next 2-3 weeks. If you don’t perform a pregnancy test.

Continue with your INH therapy and complete it as directed. When used correctly & consistently, condoms can be very effective at preventing pregnancy. Combining two methods, like condoms and withdrawal (“pull-out”) can make the risk of pregnancy even less likely.

If your INH therapy is going to be long, you may want to consider starting a hormonal birth control method like birth control pills, patch, vaginal ring, or the DepoProvera injection. Family Planning Plus clinics offer gynecological exams and birth control for little to no cost, depending on household size and income.