Support/advice

Recently went and visited a guy I used to date 3 years ago he’s in the Air Force and we had sex no condom he came inside me eve said I had a 7% chance of pregnancy it’s been 5 days since we had sex and I feel weird my body doesn’t feel normal. Could I be pregnant idk what to do. I have never he a guy cum in me Idk what we were thinking it was in the heat of the moment and no plan b was taken