Pimple like bump in pubic area

I guess about 2 months age my husband ended up with a pimple like bump in his pubic area. He didnt think much of it. A month went by and he had more now in his pubic area as well as his penial area. The dr told him it had to do with hormons. He went to a derm and they told him that it was warts. He found another dr online and went to see him they told him that it was Mulluscum. Now when the first dr told him not to worry it was nothing we had intercourse. Its been about 2 weeks I was wondering what is the percentage that I can get this? I went and got tested for everything when he was told it was warts. Im clean so far thank god. I want to know more about this mulluscum I found out it is a STD but kids can get it to from swimming and playing in a sand box. But because where he has it I want to say Im 100% sure Im not the only 1 my husband has been with in our 21 yrs. I was also wondering what is the percentage of hookers having this? come to findout theirs a lot of them around his work