I used to be a chronic sleeper and have gotten better further along in my pregnancy, so I know exactly how you feel. The only way that I would stay up was to avoid all couches and beds at all times! Once I saw one, it was all over. I'm finishing up my bachelor's too, so I know the feeling of always seeming to be behind. Make sure you are eating light, healthy meals instead of heavy ones because those will put you to sleep too. If coffee works for you, maybe try a cup every now and then but if your sleeping habits are as bad as mine, then it won't help. I'm rooting for you! Again; keep busy, exercise a little if you can, eat light and frequent meals/snacks, and avoid all things that you can sleep on.
Treat yourself to a cup of coffee and throw on your favorite music too. It might give you just the boost you need to start a small project, and if not.. Don't sweat it! Pregnancy is hard!
I think the best thing you can do is just be open and communicate with your significant other about how you're feeling. Let him know that this phase in your pregnancy will pass. it's completely normal to go through phases of wanting to take naps all day and I can certainly relate to this feeling because well my fiance was at work all day I felt so guilty that he would come home and it would look the same way it did when he left. hopefully he's a decent guy and he will understand instead of getting upset with you for things not getting done around the house.
it can be really overwhelming when you know that the whole entire house needs to be cleaned and organized however if you just focus your attention on one space in the home even if its a small one you might have a much better chance of accomplishing things. start small! try to think of one project that you know you're capable of managing and try to do it between naps and try not to stress yourself out about constantly thinking about the big picture