Pregnant? Or am i getting my hopes up?

I tracked my ovulation for the 1st time this cycle. Got a very high surge and had sex before, during and after it. Started my period (or what I think was my period) a week early, and I’m routine like clock work to the predicted day every single month so that was unusual for me to start so early. Bled for 5 days, pretty heavy for 2 days, and then lighter the other 3. I just assumed it was my period early..it actually just ended yesterday (Wednesday). Anyway, I’ve been out of town since Tuesday morning for work. Tuesday afternoon I got so nauseous that I had to pull over and puke at a gas station. I NEVER puke. Had to puke during the night Tuesday night too. I have been so nauseous since Tuesday, like smelling things, esp food, makes me nauseous. I haven’t been eating much bc I just don’t want to puke again. Now I’m wondering if i could possibly be pregnant? I would be 4 weeks and 4 days pregnant today if I am pregnant based on ovulation..am i getting my hopes up? I just thought now that I’m nauseous, could it be pregnancy and what I thought was my period a week early actually wasn’t a period? I also have been super exhausted. I initially thought it was from traveling though and having a cold this week. I will take a pregnancy test when I’m home tonight just to see..just wanted to know yalls thoughts!