Hi, My Boyfriend And I Had Sex Maybe Two Weeks

Hi, my boyfriend and I had sex maybe two weeks ago. We didn't do sexual intercourse. We used our panties, but he cums. I'm still a virgin because we never have sexual intercourse and i don't want it. Since then, i feel so anxiety about getting pregnant. And my period is late now. Is it possible to get pregnant? Is it true if anxiety have relationship with late period? Please answer me. Thank you.