help!

I am 7 weeks 1 day today and my first baby/pregnancy.  Every day I am feeling worse and worse. I have always been a very healthy, active and on the go person- playing tennis, going to kickboxing yoga and barre, running, paddle boarding, walking my dogs, etc.. I used to have no problems keeping up with my cleaning and doing laundry (I actually used to enjoy chores)  and now I feel so terrible that I can barely even make it out of bed on the weekends. My diet has gone to crap because the only thing that sounds good to me is greasy fast food and ice cream. I'm so exhausted and sleep so much my husband thinks I'm depressed. I have always had anxiety but it's getting worse and I don't know what to do. I sleep, wake up, eat crap, feel worse, and then go back to bed. I see all these other fit moms enjoying their healthy pregnancies and I honestly thought I would be one of them but it's just not turning out that way and it makes me upset. I am not drinking coffee so it's hard for me to come out of my dazed/ exhausted state most days. I am afraid I will hate being a mom or hate myself because I gain too much weight and am the token fat lady at the playground. I'm so lazy and literally just don't have the energy to try to get up and do stuff. Is this normal or am I crazy and need help? I'm terrified I won't know what to do when baby comes and that I will fail. Do I just need to suck it up? How are y'all coping with these big changes? Do I need to stop b*tching and be happy to be prego? Sorry if this is just one long pointless whine. Just needed to vent