Exhausted

This pregnancy has been trying. Overall I've been healthy, but I have felt, well, crappy. Very crappy. I had morning sickness up to 20 or 22 weeks. Now I'm 29 weeks and I'm feeling sick again. How can this be? I am tired all the time, but I can't sleep because I can't get comfortable. I get restless leg and my back is killing me. Today I was nauseous and dizzy and couldn't sit still because of the restless leg and aching back. Plus to add stress I didn't feel the baby kicking as much as normal. He is still moving around, but not with as much gusto as I'm used to. It's worrying me and I don't know if it should or not.

I want it to be early April and to be holding my healthy baby boy.