Chemical?

I had gotten multiple positives on multiple tests here are a few examples below my period was due today I started spotting last night light pink to a little bit darker pink I woke up this morning to a little bit darker in a little bit more blood but nothing too much it has picked up now it's red I do have what either looks like lots or stringy discharge. Normally I start off late but within a few hours I go to heavy this is lighter than my normal but it's still what I would consider too heavy for a healthy pregnancy. I do have a history of multiple miscarriages due to my uterus being heart-shaped. I have carried twice to term with two healthy babies. Both was delivered C-section second one was due to having a c-section previously no complications besides heart rate with my oldest dropping and my blood pressure dropping is the reason why I had the C-section. Is it possible that I'm bleeding due to having c-sections. Could this be a chemical my lines are faint but they're there. First response was taken today middle of the day while I was still bleeding.

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