Crazy or it's might be a BFP.?!?!

I'm 10dpo and AF is due soon...

I did one cheap pregnancy test a few days ago and it was negative...

But I saw this story on the net, how to do homemade test.. and came across the bleach one.

I didn't do the test as stated above, my mum had put bleach in the toilet and when I went to this is exactly what happened it formed up pretty much straight away and was still form when I got off the toilet?

Could I be pregnant? Or am I just overthinking it and being silly..

Don't want to get another negative so I have been holding out from doing a test Untill I'm late on my period.