Pill/Pregnancy

Isa

So I’ve been taking the pill for two months to the tee. The exact same time everyday! I’m on my 3rd week with 3 pills in. Roughly 6 to 7 hours later I vomit, but it’s clear!?! I don’t know what this means, my bf says I’ve been eating less and I’ve also lost 1 pound in the course of taking the pill even when eating what seems to me to be a normal amount. Any help, suggestions, or advice would be welcome.