Don't know anything about mucus plugs. But I don't think it's a disgusting question.
Re: grooming, it strikes me as a good idea to give everything a good prune so the little guy doesn't, er, tangled or anything (sorry for the mental image!), but my only options are to get DP to do it or go to get it waxed.
37+4 today. It just sunk in today that the due date is the week after next. My god. I've pretty much organised stuff for my hospital bag, and we went to get a car seat fitting yesterday, only to find that John Lewis didn't have the seat and base we chose in stock and the seat will take 7 days for delivery. Might be cutting it a bit fine here. 