hello

Harley
Hi ladies! I've just started some spotting last night. I'm about 7DPO today and there is still spotting. It started out very light. Hardly noticeable and just a bit ago it was def more noticeable. I also had some cramping yesterday and some today and some backache today. Could this be implantation or is it more than likely AF showing early? Help ladies. I'm just confused. 
This is my second month actively ttc and I usually don't have mid cycle spotting at all.