Should i leave or should i stay?

i have been married for 2 years now and we have a 1 1/2 year old and i am about 3 months pregnant now. my husband has not been very nice to me he complains about my weight and my looks and my butt and breasts are not big enough and so on.. i am not happy anymore, there is no romance or affection and definantly no compation. the problem now is i do not work now and would have no way to support my son and i. but i think i deserve a lot better than this and he is not that good of a father either, he is usually yelling at our son and i never get a break from him. i take care of our son all the time, i get up with him in the middle of the night and in the mornings i feed him change him and bathe him. his dad wont even go to the park with him or even swimming. i wanna be happy but i dont want to raise my kids in a broken home and i worry that i would not find a wonderful guy that loved me and my kids.