Precum - am I just being nervous?

7/19 my boyfriend and I had unprotected sex (which we usually do but) and he 100% did not ejaculate inside of me (I made him pull out and finish in the bathroom too avoid any chances whatsoever). My last period was 7/3 so I am expecting it 7/31, I am very regular, have PCOS and I am also freaking out from precum. He peed before and I understand you can get pregnant from it but the chances are killing me - I’m trying to not be stressed so I can get my period on time since I am only feeling pms symptoms (cramps yesterday, headache and incredibly tired the past few days) but still am nervous. A lot of people I have spoken to (moms, friends) have said I will probably be fine since he didn’t get all up in there and ejaculate. However I am 17 and my parents cant know I am sexually active. I await your responses. Thank you for your time.