Pregnant mom study RANT!! NEED ADVICE.

Okay I just need to clear my head! I'm sooooo frustrated ughhh OMG!. Okay so I have an 18 month old and I'm 8 months pregnant with my 2nd son. I've been studying to get my Real Estate License in the state of Nevada, since we will be moving there and plan on purchasing our 1st home there. So I've been trying so hard to study for this class(online) but it seems as if everytime I pick up my damn computer my son wants to climb all over me, type all over my computer, shut my screen off, try and grab my pen out my hand etc. Its so damn frustrating! I feel like I can never get shit done. I try and listen to the lecture but here he is just bothering the hell out of me to where I can't concentrate. I've tried putting on his favorite shows, pulling out his blocks, giving him paper and crayons to write on and its just not helping. I NEED ADVICE PLEASE!. I've tried studying while he's sleep but unfortunately he doesn't even take naps anymore maybe like twice to 3 times a week. And by time I get him in bed for the night I pick up my computer and end up falling asleep myself. He's so full of energy! Please any suggestions to help me out! I'm loosing my shit!