Pregnancy shouldn’t be this hard..

I’m 12 weeks along and I haven’t been out of house but maybe 3 times. I have two kids and I’ve always had constant morning sickness but this time I feel like death all the time. I feel weak, have nausea that does not respond to Zofran any longer, and just overall feel lifeless. I literally cannot do anything. I can just get myself showered once a day and I have to lay down immediately. It’s hard for me to even write this. I have no strength. This cannot be normal. My doctor says baby is healthy and all but i need help.