Work rant!

HN
I'm going to get started by telling you I have been shipping & receiving / warehouse coordinator / parts driver for 4 years at a heavy duty truck shop in Alaska. I told my employer at week 8 that I was pregnant because my job requires constant lifting. I was honestly thinking he would put me up at the counter so they wouldn't have to deal with accomodating the warehouse to a pregnant woman. But 24 weeks later, I'm still back here (it's cause nobody wants to do my job). My body aches. I am so drained of this place! 
My night parts guy is the one who is supposed to finish up what I couldn't do that day which generally includes moving heavy objects that cannot be moved with a forklift/pallet jack (ie.. brake drums, steering gears, seats...). He has the nerve to leave those sort of parts in front of my desk! Where I cannot squeeze anymore, mind you. Haha  My boss often forgets I'm carrying a baby and leaves shit like that in inconvenient places too!! I leave stupid little notes everywhere to remind them to stop being jackasses, and put their shit away, but nothing works. I am just so sick of this place. Anywho, my night parts guy literally comes back here when I return from my parts run, and asks everything I need for him to do during the night. Trust me, he makes probably ONE transaction for his remaining six hours after everybody leaves. He does nothing all night. I tell him what I need him to help me with back here and if he doesn't do it half ass, he just doesn't do it at all. My body hurts just thinking of the stuff I need to finish by the end of today. 
They're so lazy! They throw their invoices back on my desk for delivery and don't pull their own parts (which has ALWAYS been a thing, it ain't new!!). They leave for lunch and I sit here making customers unhappy to where hey start bitching because they don't have their parts yet, until my guys load up the parts they billed and neglected to pull.
I don't know what they don't get. It stresses me out. My boyfriend hates that I haven't been able to enjoy this pregnancy like I've wanted to. Which makes me sad because there's nothing he can do about it and I know he wishes he could.
My boss thinks I'm just lazy. I do what I can when I can do it and it just makes me feel terrible that he thinks I'm lazy. I was afraid for months that I was going to get fired (I stay for the benefits) so I did more than I should have on multiple occasions. A part of me wished he would have done it. But the other part of me is glad I've stuck it this far, cause I haven't paid a penny on any check up or ultrasound! 
I have 8 more weeks to go.... It's literally right around the corner!! I plan on speaking to my boss and asking what he plans on doing about my position since it doesn't look like he has started looking for my replacement yet. He knows I do not plan on coming back. 
If you are to write anything, please just give me words of encouragement. Otherwise, thanks for letting me rant, ladies!!