2nd Ectopic?

Gemma

I had an Etopic 18 months ago resulting in right tube removal. I got a BFP last Monday but started bleeding 2 days ago at 5 weeks 5 days. EPU took my bloods and my HCG was 603. Nothing visable in my womb except thickened lining, suspected miscarriage. Today (48hrs later) it's at 958, does this mean ectopic? Progestrogen is 17.5? Not sure what this all means.