I have recently relapsed to being bulimic. Because of this I believe that i have ruined my stomach and I was diagnosed with gastritis and everything I eat I throw up because my stomach would be in so much pain that the only relief was to vomit. Anyways, I am sexually active and I do rely on my pill Junel fe 1/20. I recently had sex on the 24th and 2 days later (26th) i threw up 8 hours after i took my birth control pill. The next day I puked in the morning before i took my pill and then today (30th) I threw up again 6 hours after I took my pill. Right now I am terrified that my pill has become less effective in preventing pregnancy. But me and my bf always used withdrawal, is there a chance that i could become pregnant because of how much I threw up? Was my pill less effective after throwing up?