Should I take emergency contracpetive now- is it necessary?

Patient: My boyfriend and i have tried to be really careful and have used a condom every time we’ve had sex. But, when he pulled out after wards, the end of the condom felt weirdly wet. So we checked the condom by squeezing it and no sperm came out. So we’re pretty sure the condom didn’t tear. Why could the condom be so wet afterwards when it has no tears? could i be pregnant?