Looking for some reassurance

I am really struggling ☹️ I'm on anti-sickness medication which helps a bit. I feel like I am useless atm, I go to work and come home and just sleep! I usually do all the cleaning and cooking and I can't even bear to make any meals at the moment 🤢 I'm going to sleep for about 10 hours a night but come 4pm Im so exhausted I can't bear to do anything. I'm usually really active and go there gym regularly and walk the dog every day but i haven't been to the gym for weeks and barely walk the dog anymore because im so tired. Is anyone else feeling like this?? Please tell me it gets better ☹️☹️