Should I take plan b?

My period ended about 2 days ago and it was early because I took plan b about a month ago... the plan b made me feel sick but I never threw up and no I have terrible acne from it... today I had sex and we took the condom off because it was so dry and I could feel he was wet when I took it off but he never came so maybe pre cum? Anyways we had sex without it and he pulled out and came but as he was pulling out I know 100% I was dry and I felt it and I was wet so I feel like he got a lil in me but he kept saying no it was me.. should I take plan b he did pull out most of it and I really don’t want to because of how bad my face broke out?