MCV (molluscum) can be contagious, but many times it is not, For instance, we see many children who have MCV all over and no one else around them has any. We see adults with MCV in the groin whose partners don't have it, or who have no partners. Where it comes from is not known much of the time, any more than you always know where you catch a cold from. Since MCV does not in any case lead to any complications in women, once you've treated it, I see no reason for you to avoid sex now.
As for HPV, it's true that there is a theoretical risk of transmission even after removal, but the risk is low. In any case, what other advice could be given to someone who once had HPV--to avoid sex forever? I admit that there is some unclarity in this answer, but that is the nature of medical advice sometimes. I would concur with your doctor--that once the HPV is treated and has been gone for some time, resumption of sex is appropriate. If you wish, you can discuss your history with a new partner, in the interests of full disclosure.
OK. I understand this approach. My question then is this: are there any differences between probability of transmitting MCV one week after removal of the growth vs. several months after removal?