suspected miscarriage

I'm around 4 weeks pregnant and I'm in bits I started bleeding Monday morning and haven't stopped iv had stomach cramps but not sever I went to the epu they told me to do another test on fri if it was still positive I have to be booked in for a scan it's a waiting game iv had 2 miscarriages in the past wiv another partner I really don't want this to happen again but I know it's gone I'm finding it so hard I can not stop crying