doctor doesn't seem to care

I've been having cramp like pain around my stomach and back I told doctor and he said well you're pregnant it happens and wrote it down then I had to call the office because I was feeling extremely dizzy and I couldn't keep food down and I called the office and the nurse responded with "oh its you again" I explained the symptoms and she responds with there's not much I can do.. you are pregnant I made an appointment to see my doctor but they don't seem to care.. miscarriages occur in my moms side of the family which worries me.. no I don't want sympathy but they don't tell me anything all they say is.. you're pregnant it happens I hate the experience I'm going through and I'm 22 weeks
And I work with children so I wouldn't want something to happen to them while under my care knowing I don't feel well