i am so sorry you are going thru a hard time. i can totally relate how difficult it is to be around someone who is due when you were. my niece is pregnant and due 2 weeks before i would have been.
i think it is pretty important for your dh to really try hard to spend some extra time with you. please sit down and talk with him. tell him how much you need him, especially now. i know how stressful it is to be starting a new job (my dh owns his own company - he is pretty much perpetually stressed out!). do you have anyone who can watch your toddler so you guys can plan a date night every month? it is amazing how just that little amount of time together can really help.
HUGE hugs. i hope things get better for you.