Can I still get pregnant?

My boyfriend and I had sex probably 4 times in a row about two days ago. Normally we don't use condoms we just use the pull out method. Can I get pregnant is he cam in me, if the sperm was clear and not white like the first time? I know its a stupid question, and the answer is probably a yes. But, I'm hoping that maybe since we had sex so many times in a row that it wasn't able to like regenerate that quickly.