I'm dealing with this, too. I try to keep some kind of clothes on at all times - even after I shower - because I'm really self-conscious here at 36 weeks. Talking to my DH about it won't do any good because he'll just say positive things, but I know we're both in awe of what has happened to my body, in a good way, but also in a "whoa, we didn't know I would look like THIS" kind of way!
Lately, I've been looking at photos of myself from pre-baby and reminding myself that I will go back to being myself. I have a ton of coworkers who have had babies in the past few years and most of them are even smaller than they were pre-babies. They are inspirations to me.
Like my horrible sciatica, braxton hicks, and back pain - I tell myself "this, too, shall pass."