Hi, I haven't been on birth control since April and me and my boyfriend had sex on 8/8 and he came in me and I started throwing up yesterday evening for no reason and am now very bloated and sore in my low abdomen area from and has only gotten somewhat worse. Cramps as well but they don't feel the same as my period cramps. My last period start date was 7/18. When should I test? Could I be pregnant?