Impatient...was it implantation??

Holly

So AF should be here in 4 days. On this past Friday (7 dpo) I had brown spotting, next morning with bowel movement (tmi I know) there was bright red spotting but never happened again. Went back to brown that night and I haven't spotted at all the last few days. along with the spotting those few days I was having mild but somewhat constant cramping, breast tenderness, headaches (like felt like pressure in my head, had to stop working out at the gym early due to the headache which is unusual)...and at one point I stood up quickly and got light headed and everything went black for a second. Now the last few days I've had little to no symptoms. if this was all due to implantation would it be gone after a few days? I'm still testing BFN, I posted my temperature chart as well...any input? On the day I THINK may have been implantation I had a big drop in temp, everyday since then my temp has been higher than coverline, actually this morning my temp was the highest it's been (even higher than OD). I realize it's basically 50/50 right now but hoping some of this may be a good sign

UPDATE: I'm 3 days from AF now, still getting BFN but the mild cramping has started again. it's confusing for me because my cycle is always like clockwork as far as premenstrual symptoms. I never cramp until the day of AF, as soon as I start cramping I know AF is only a few hours away at most. Hoping I'll get a BFP but trying not to get my hopes up since I'm 3 days from AF now and still BFN