Girls please help I'm really freaking out

So I took the top FRER yesterday morning (period was due yesterday), saw a hint of a line. Waited a few hours, period still did not come so I took another one that afternoon. Saw a stronger line and considered myself to be pregnant. Did not say anything to my husband because I wanted to surprise him in some cute way. We had sex (sorry TMI), and about 2 hours later i started bleeding. It started off light but got much stronger as the night went on so I considered this my period. I'm wearing tampons, it's not spotting. Still confused this morning I take a wondfo and still think I see a faint line- does anyone see this? I know I just need to call my Dr. I'm thinking it's either a chemical pregnancy, or is there any way I could be bleeding this much from sex? I never have bled from sex like this before... any advice is welcomed. Sorry it's so long but it's confusing 😥