What is going on with my cycle????

So I posted a few days ago on here saying how disappointed I was as I’d just had a big dip in bbt on 10dpo because I had had hope due to my other temps before that showing a different pattern this month, well I’ve since spotted from my dip in bbt at 10dpo and am now 12dpo and still spotting, which isn’t unusual for me, in fact it’s what usually happens before my af which is due 13dpo however my temps have risen steadily which hasn’t happened before, usually when I start spotting at 10dpo they slowly go down. My spotting on 10dpo was one bit of pink cm, on 11dpo it was one wipe but a bit more of it was there and it looked bright red mixed with brown and today 12dpo i have more spotting most times when I wipe after toilet but it’s now brown. I’ve taken a few tests and all bfn but then if it was implantation maybe it’s too early to get a bfp as it’s only been 2-3 days this morning? Or am I just clutching at straws, the high bbt is what’s thrown me, otherwise I would swear af is coming as I’ve had bad cramps and lower back pain. My chart is below. Xxx