My boyfriend and I were having some fun and making out. Then I touched him, he got some precm on his hand (I didn't) but he wiped it off. He had not masturbated or ejaculated for 2 days before this, and had urinated several times since then. His hands were therefore dry, and any chance of any sperm in precm was very low anyway. We continued making out, and about 30mins-1 hour later he fingered me, and went inside. We stopped because it was uncomfortable for me. He may have licked his hand before he fingered me, but doesn't remember. What are the risks of STIs or pregnancy in this situation? I'm quite concerned about any risks. I will always remember to wash hands beforehand next time. Thank you!