sick on birth control!!!

so for the past 7 days, I have had (what I believe to be) the stomach flu. throwing up a few times, diarrhea, and not eating a lot. for the first 3 days, it was bad, but it had died down since. I am on the pill and I take it consistently every morning with no fail. I have never missed a pill. the times I did throw up, it was about 3 to 4 hours after taking the pill. I would also poop out almost everything I tried to eat for about 2 days. my husband and I had sex without condoms and we had sex maybe once or twice while I was sick..but I wasn't feeling it so neither of us ever climaxed. about 3 days ago, I finally felt great and we couldnt keep our hand off each other. he ended up coming inside me. reminder..im still on bc and i take it every day with no fail.I'm just worried because everyone says the bc can fail if you have diarrhea or throw it up. any thoughts? im not trting to conceive.