why the flying front door are my tests all over the place???

I am taking tests. I got faints on dg cheapies at only 8 dpo. I took a few more and still faint. I took frer and it was a definite positive. I took a fr rapid and it was faint positive yesterday at 11 dpo. I took 2 frer today and there might be a second line but it's so faint. I took a digital fr and a bfn at 12 dpo. Period expected in 2 days. No sign of af What's happening????? Someone plz help?