Losing line progression? Help!

So the 23rd I got a faint line that was progressing nicely. I have no clue what dpo I am or was. I had a MC in June, so Im afraid this may be another. Yes they were taken at different times but on the 29th, I got a bold, dark line....tested again 30th was fainter an then 31st a little darker than 30th but not as dark as 29th. Its like it was up, went down then back up a little. Please tell me someone had similar exp and had a healthy baby. I dont think I can take another MC, its so heartbreaking. Any ideas ladies? Heres my progression from 23rd to 31st. I had first beta on 26th and hcg was 25.53 due for second beta friday.

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