I’m so scared

I think I’m losing my baby.. I’m 13 weeks and I JUST heard the heartbeat two days ago.. baby was just fine.. and now I’m bleeding a little, and I have light cramps.. the doctor won’t see me till 1:30 but I’m so worried that I’m gonna end up losing the baby.. everyone already knows about baby, I’ve started getting stuff from people for baby.. now I’m worried that I’m gonna lose it and I don’t know what I’ll do if I’m not carrying my baby anymore.. I don’t think I can do this..