29 weeks and cannot function

I have reached extreme exhaustion. I can barely walk because my feet are killing me, I feel so heavy, I've slowed down so much. In the mornings I cannot get up so I stay in bed and work from home. So far my bloodwork is all normal. I've gained about 28 pounds total, and idk if I gained TOO MUCH which is why I feel like this. I know it's so early but I just want the time to come fast so I can have this baby in my arms, and mommy can feel normal again.