Don’t know what is going on

Hi ladies, after some advice. I know I ovulated on August 13th. We did the deed a few times before and on ov day. I was having weird symptoms thinking omg could I actually be? Last Friday on what would’ve been 10dpo I had a faint positive on a frer. Waited two more days and another faint line. I was ecstatic thinking maybe my hcg levels were just too low at the time to make the line darker. My boobs had been killing me all last weekend. On Monday I started brown spotting, but only when I wiped (13 dpo at this point) thought ok, maybe implantation. On Tuesday (14dpo and AF due day) I take another test with frer and another faint line appears. Defo there, defo pink, just faint. I continued brown spotting until Thursday evening and then I started bleeding more fresh red blood, no clots or anything. Was panicking really. Yesterday (17 dpo) I took another test and STILL a faint line, but defo there. I continued bleeding like an AF bleed until today and this afternoon it just stopped. Just like that...no more blood. Am I actually pregnant? Or could it be a chemical? I have another test which I’m saving for tomorrow or Monday. Has anyone else ever experienced a heavy implantation bleed? This wasn’t just a normal AF bleed. The time scale of 5 days was right but 3 days brown spotting and only when I wipe to two days heavy red blood just isn’t normal for me. I normally bleed red blood for 5 days heavy finishing off with the brown. Now nothing. My boobs are still slightly tender but nothing like they were last weekend. Wondered if anyone had any opinions. Xx