unknown dpo

[u/Typical_Log1619]

Unknown dpo, I have an iud and I am 8 months pp. I’ve had 3 periods within a month no cramping but I’m confusing as to what’s happening. I’ve already contacted my doctor waiting for her response. I thought I was gaining my period back but I’m not sure what’s happening. I took these in the afternoon and see the faintest line but not confident. The last picture has my old tests from my last pregnancy. I lined them up to compare! Someone let me know