I had my last period day and my husband finished, I immediately ran to…

I had my last period day and my husband finished, I immediately ran to the bathroom to wipe myself down, in hot water, after 12 hours I took emergency contraception ESCAPE, then my lower abdomen was slightly sore, and for a couple of days there were reddish-brown discharge, after 3 weeks I did a test NEGATIVE, then a delay, I did a test, bought more expensive one, again NEGATIVE, I read online that many have delays, do you know anything about this? Or has anyone experienced something similar?