scares scares and more scares

Me and my bf have pregnancy scares almost on the regular so this might just be me. So during sex sometimes I ask him to cum in me (right after my period is over) most of the times because it pleases him a lot. BUT I don't want to get pregnant. I've done it 3 times after my period and I haven't gotten pregnant but this time I'm kinda worried because of the consistency of the CM check thing, even my boyfriend got all nervous this time. Is there a possibility that I may be pregnant?