Hey Betsy- the lumps could be caused by the posture of the animal... it's something to bear in mind.
Anywhoo... after asking the two people I trust most(them being Alon with whom I work and Larry M from Redtailboas.com) I have decided that there is a chance of her being gravid- and if the shed she went through on January is indeed an indicator that she ovulated, than she should be giving birth somewhere around the end of April, beginning of May.
It's a possibility... dunno, hehe, I am confused and so are my friends.
Oren.