8 dpo Symptoms-ish

So what started off as mild cramping here and there at 6&7 dpo earlier this week, has turned into a mixture of other strange things my body is doing it doesn't usually do post ovulation. Went to bathroom this morning and when I wiped I had some spotting on TP, light brown in color... Which never happens post ovulation for me.. So I wiped again and there was nothing? Has anyone experienced this?? Don't want to get too excited but of course my first thought was implantation bleeding! Af is due in a week, btw. Along with that I had a bad headache just in the morning an now I'm have weird metallic like tastes in my mouth- out of no where?! Agh!! 😝