Wah 8DPO the cramps already, my friend say her implantation cramps felt more like a light poking or pulling sensation, not the full squeezing feeling of period cramps, so if yours feel milder than usual it's a good sign! Someone in my mum WhatsApp group say wait till at least 10-12DPO before testing, that way the HCG level enough to detect lah. Try not to symptom-spot too much (I know, easier say than do!), just hold out a few more days then test first thing in the morning for most accurate result!