NO sex drive

Hey ladies could use some device! I literally have no sex drive whatsoever and haven't for about 2 1/2 years. I miscarried almost 3 years ago and then about three months later we got pregnant with our first son and he is amazing but ever since the miscarriage I literally have no sex drive at all ever. I never want to be touched. I'm supersensitive and irritable I don't even want to wear thongs or lingerie for my husband. 
He has been great so far but I'm not sure how to continue forward please give me any advice that you might have. Should I see a doctor? I am not on any birth control or medication right now either...HELP!