I’m looking for some hope...

Not sure when my due date is because I was on the pill and got my regular period but a positive test a week after my period ended. They were rising good at first and Thursday was at 89 and this morning (Monday) it was only at 147. Anyone had a good outcome from a slow rising hcg? Going to see a specialist tomorrow but the doctor was very vague as to what is going on.. anyone else in a similar situation or have been before and what was the out come?