BTW I don't have any medical conditions that prevent me from cuming - I have absolutely no problem cuming on my own either manually or with the aid of toys.
Also the one position I did cum during sex with my husband - he can't do anymore b/c of his psysique (He has no medical conditions other than obesity).
Uhm...being overweight and not interested in sex could point to a borderline diabetic condition, which can only progress if it is not treated.