I had protected sex on Nov.27th two days after my period ended.

I got my period between dec21.-25. Kind of light on the 25th and a couple days later On the 27th I took a pregnancy test because ( i was paranoid ) and it was negative.

We had a protected quickie on Jan 1st (which I threw up on the 2nd ) And 5th

Last week I had some white discharge throughout the week like I usually do before my cycle but my stomach has been feeling weird for two weeks : gasy, empty, and 2 foods made me feel very sick .

Could I be pregnant?