i fear pregnancy from first round cum (1.5hrs earlier) mixed w second round pre cum.

so me n my boyfriend,both of us were virgin so we tried sex for the first time.
first round we did it w protection but it wasnt so smooth cuz it was our first time and didnt even go in properly and he ejaculated after i gave him a “handjob” so first round -safe

but 1.5 hrs later we tried to do it **raw**
but it didnt go in properly, maybe jus for a split second it went in. (he didnt cum this round)

im scared i might be pregnant what to do?

also i have irregular cycles my last cycle was 49 days long,we did it on 11 july nd my periods was supposed to come on 22nd july but its 5th august now. IM 14 days late
(but my periods r usually irregular)

what should i doo helppp please