Should we or should we not?

My boyfriend and I had sex tonight with a condom. He pulled out before he came and we both seen him ejaculate in the condom. After he came we looked at the condom while it was still on him and there was this white stuff around the base. Even though we watched him ejaculate in the condom Is this from me? And should we get emergency contraceptive in the morning to be sure? We did the water test to make sure there were no holes and there weren’t any.