Bleeding then BFP?! Need Advice! (Updated pix daily in comments)

LaLa

I had faint positives on 8-10 dpo then heavy bleeding on 10-13 dpo, so i thought i was out & i stopped testing BUT i felt gross on 17 dpo so i tested… what is going on?! When i called my OBGYN, she said it’s probably a chemical pregnancy & to wait 2 more weeks.

Would my lines be getting darker if this was true?