Could it be possible. (Pregnancy)

I had sex before my cycle, do not know if I was ovulating, I truly do not keep track. I had a cycle October 29-November 2nd I had intercourse November 2nd . My cycle does not come until the 25th of this month. I have been vomiting, and having stomach aches for the past week, more tired than usual, and no I am not sick, super healthy. Could it be possible I am pregnant. My boobs are hurting, headache and my back. All I can get down is chocolate candy 🤣🤣. Could my boobs be hurting due to me going to physical therapy? They are so sore, and my back is killing me, it started before I went to physical therapy, along with boobs hurting. I am not stressed, and nothing has changed in my life.