Worried about Period

So, me and my boyfriend both lost our virginities on the 27th of January. On a different period app, it said i should have had my period on the 15th of this month. When we had sex, we used a condom. But, when he came, he didnt pull out. Afterwards, he put water in the condom to make sure there was no rips or holes and it was fine. On eve, it says ill have my period in 3 days.

Well, today, we had sex without a condom. He didnt cum in me, but im still nervous that if he precame, it could get me pregnant.

According to the other apps, i'm late. Could anyone tell me if i could be pregnant or not? Im super nervous, especially after today since we didn't use a condom.