Help me out please!

So I had my last period starting April 22nd - 28th it lasted 7 days which is unusual for me because my periods usually last 4-5 days not only that but I spotted 2 days before my period started and that usually doesn’t happen, I usually spot and then hours later I start. I took pregnancy tests and they were positive, on the 28th I went to the er because I was nauseous and dizzy and they did blood tests and everything came back normal. Then again today I’ve been feeling nauseous since the early afternoon. Me and my bf have been BD since I got off my period, is it possible to be pregnant? I haven’t been testing my ovulation this month and my apps show I ovulate between may 1st - 7th