As someone who is old enough to have fibroids, I would say be very glad that the area is free of constriction. What you're doing now may prevent a very constrained vagina in future years, especially if you leave dairy out of your diet when you're done. I don't think men care much about this type of small distraction anyway, so you ought to accept that glamorous sex can be revived after your health regimen. I think fasting needs to be about embracing the body, and the self, where its at.