How do I tell my mom I'm scared.?

It will be a year ago I lost my baby during pregnancy and since then my husband and I have been trying again off and on. My mom wants me to go to the doctors to get checked up as I have gained weight since then and I feel sick everyday. But the last time I went they said they ran every test possible and everything was normal so they told me it is depression. Well now my mom has been pressuring with me getting pregnant again as she is sick and not in good health and I am scared to go to the doctors. I made an appointment for Monday with a obgyn to talk about it and figure out what's wrong but I am scared of it happening again and I got really depressed last time and I am now barely getting over my depression as I have had no one to talk to. I do I tell my mom so she will listen about how hard it was for me. When we lost it i hid my depression from my husband as he was also depressed and I wanted him to get through it without me putting my depression into it and now that we're trying again and going to a doctor Monday I want to be able to tell them how hard it was before we go but I'm scared of them being upset again too.