11 month old cries nonstop

Chelsea
I need some advice. My 11 month old cries all the time! If he's not eating, nursing, being held or sleeping he's crying. It's been 2 months since this started and at first I thought it was just teething. I'm losing my mind! I can't carry him around everywhere. I'm 20 weeks pregnant and he gets really heavy. And our house is always a mess now because I can't clean and hold him and I can't stand it anymore. Today after lunch I gave him toys, his bottle, etc set him down and cleaned and after an hour of solid screaming I finally gave up. He just followed me the whole time. Has anyone else has this problem? I dont remember this happening with my 3 year old.