Pretty serious question

So my boyfriend and I had sex for the first time last month with a condom and he didn't ejaculate and it was a week or two before I was supposed to get my period and I was late but I got it and I didn't get it this months and I've been sick and odd cravings as well as back aches, head aches, nausea, and cramps should I be worried I'm not really sure what to do😧