Dating and being preg.?

ok so i met this guy and we have been talking for a while. well now im 37 weeks preg. and he wants to come over to my house tmr to hang out and im really nervous b.c the last time he saw me i was thin and sooo energetic but now im 90 lbs heavier and wearing sweatpants. i want him to think im still y and want to continue talking to me but lets face it guys can sometimes be jerks what should i do??? im so nervous and would love if somebody could give me some advice.