Having a hard time being excited.

Does anyone else feel this way? I'm 26wks+ and happy to be pregnant. We were trying for this baby. But I'm not excited. I've been so sick. I spent my first trimester and then some on all four puking my guts out so hard I was soaking myself too because my bladder couldn't take the pressure. Im usually a very active person and I haven't been able to walk for more than a few minutes at a time without being sick or hurting. This pregnancy has taken a real toll on me. I feel fat and frumpy. I have absolutely no energy. I feel useless around the house because every time I try to do anything I'm in so much pain from my scoliosis I have to stop. My husband has been amazing and so supportive. It wasn't like this at all with my daughter but that was 8yrs ago. I'm 36 now. I want to be excited. I really do but its just not happening. I don't want to feel like this about my son.