7 positives and then af?

I took 7 tests over 3 days and everyone of them had faint lines but they were definitely there (see photo) and then I started my period. Now I'm on day two of my period it's like a normal period, it's definitely more than spotting
 Could this have been a chemical pregnancy? I read that those usually happen around 5 weeks but I would be 3 weeks, is that too early? Could I still be pregnant? Someone please answer if you can, I've asked before and no one ever comments...thank you