BFP or chemical pregnancy help? X

I was feeling very weird and tested at 6dpo and got a faint line...I tested again at 7dpo and a darker line appeared and so on...now I'm 3 days from AF and I tested on a first response and got the below pic. I can see the line but it looks a little choppy at the top and I'm paranoid that it may be a chemical pregnancy because I was feeling symptoms so early! It could also be the test but I'm just paranoid 🤷🏼‍♀️

I know how it's feel because I've already have a baby but this time when I carry my son I get a little pain in my left side so it's stressing me out a bit.

What do you ladies think? X