Is it safe to workout a lot while pregnant?? I'm starting to feel so lazy like I don't do anything…

Is it safe to workout a lot while pregnant?? I'm starting to feel so lazy like I don't do anything but clean the house, sleep, lay down, and eat ALL DAY.... Maybe I should start an at home daily workout and take 30 minute walks , it might help my days pass faster & I'm sure I'll sleep better! ANY SUGGESTIONS MOMMYS??