I’m worried about this..

Ok, I’m actually pretty worried. Duh by my title... ok... Normally I have some pretty heavy periods. The cramps are crippling at times. In comparison, this cycle has me extremely frantic! I started my period 3days later than I should have; not a big deal, just a detail. My family uses the blue toilet bowl cleaner. Note: I’ve been on periods before while we’ve used this cleaner. Anyway, there was a lot of blood... and I mean A LOT OF BLOOD. The water was black with a blue halo. I’ve never bled this much. Both pairs of pants bled through... please... Any advice?