did I have a chemical ??

JM • 28 started TTC #baby 1 June 2016. 2 and half years 🌟
Did i have a chemical or was this an indent / Evap ? 
Got a fair positive on 7th of October 
Came up in 2 minutes, could see the line as clear as day light. Was light pink. 
Then it went away and i started having spotting on the 9th then the 10th it was heavy with clots. There was no line? 
I'd never ever seen a faint line on my test ever, so I was so excited to see faint line. 
Can anyone help as to maybe what I had or  what they think? 
These all the same photo just taken different ways