Could I be pregnant?

My partner & I had sex on the 8th of April. It was unprotected and he finished in me.

I got my period on the 12th and it’s been like usual and should finish tomorrow.

The last 3 days I have been feeling nausea and lots of burps and heart burn.

I now lay in bed with a really sore, bloated hard stomach. Heat packs won’t help at all.

I know the answer is probably no but do you think I could be pregnant?