Red dots 🤔

Okay I just had our first baby girl 8 weeks ago. When I was pregnant me and my husband had unprotected sex a lot and it gave him these weird little red dots on the head of his penis. Now that I'm 8 weeks pp we've still been having unprotected sex (using the pullout method) and he's getting them again. I haven't had sex with anyone at all as a matter of fact my husband is the man I lost my virginity to and still to this day been the only man I've slept with. He only gets them when we have unprotected sex. We can't figure out what they are or what to do about them. Any ideas? Please help! 😫