PLEASE HELP!! need reassurance and an explanation!!! :/

Well my boyfriend and I had sex for the first time on the nov. 20th and the last time I had my period it started around. Nov. 1.. he came inside me but he used a condom and it didn't break, and this Monday I had sore boobs, and I was really hungry but yesterday I woke up in the middle of the night throwing up, and today I'm not hungry and no longer have sore boobs. I thought it was pms but I don't know anymore, am I late or pregnant also my stomach hurts(queasy) I'm discharging almost thin water ?!!! I'm STRESSING AND NERVOUS AND SCARED!! PLEASE HELP