Curious

My boyfriend and I decided together to not have sex until we're married, but we still do sexual things such as going down on each other, 69ing, and I'll grind on him skin on skin. Back in November I got scared I was pregnant because I grinded on him and then he ejaculated and after he cleaned himself up he fingered me. I got my period late, but was freaking out before I got it and was googling if I could get pregnant from that. He told me not to worry and even took it upon himself to google and look into it as well. Fast forward to now, just on this last Sunday I was grinding on him and his penis would land right at the beginning of my vagina but we wouldn't have it go in, it's our way of teasing each other, and I was super wet, he did not cum at all while I was in top of him. Is there any way I could be pregnant? I was worried about his tip being so close because I have read guys have semen come out sometimes before ejaculating. Thanks in advance!