Had Unprotected Sex, On Birth Control Pills. Any Chance Of Pregnancy?

Hi I prefer to keep a low profile, I and my bf recently had sex a few times in one day, the first time we had unprotected sex BUT although I m on the birth control pills I don t take them everynight on time say like 1 hour late I ll take them,my bf and I thimks that there s a chance he might have ejeculated insude me,alittle bit after pulling out, he messed all over my vigina with his sperm and wiped his penis but not my vigina so it still had sperm all over it, aftwards we continued having sex with the sperm all over me. Is there any chance I might have fallen pregnant and don t realise it? Please help me thank you