BFP then period type bleeding for four days! Then BFP again

Has anybody got any advice? Got my faint positive 3 days before my period was due and the line continued to get darker every day but negative clearblue digital on day period was due. I started to bleed on the day of my missed period. I have bled for five days. It’s been the same type of bleeding as light to medium flow period and it’s been bright red blood with some very small clots. I assumed chemical pregnancy and haven’t tested since. I then took a first response test today as the bleeding has stopped and I wanted to see the faded line for closure. It was the strongest pink line I have had so far. I took a clearblue digital and it showed pregnant 1-2. I’m confused. I’ve phoned my doctor but I can’t get an appointment until next Tuesday. Does anyone have any thoughts?