could I be pregnant?

So I have realllyyyyy bad anxiety. My SO and I had sex on the 2nd of this month. He used a condom and I'm on BC and never miss a pill. The last few days I've been sick to my stomach. I do have a surgery coming up so am I nervous? Thinking too much? Worrying? Cause everything I've read said that 1. You don't ovulate on the pill. The night we had sex my tracker said I was ovulating. 2. You wouldn't feel morning sickness this early. I'm just wondering what the heck is going on with me? My stomach hurts, I feel it kind of in the back of my throats but not bad enough to puke. I'm having a little cramps but my period is due next week. Please let me know!