I don't know what to do

I have been ttc for 2 years. I finally get pregnant and it's beating my body up. I can't eat or drink. I've lost 22 pounds in a month. I go to doctor in 2 weeks and if I've lost anymore weight I will have some for of a tube put in my shoulder area and someone will have to come to my home and give me fluids and meds. Nothing works for me. I can't do anything but lay and cry. I want my baby my husband also. But I can't take it. I'm considering termination but I don't know if I want to. I just don't want to harm my body and prevent myself from being able not to conceive again. I don't know what to do.