Please help! I'm only on CD16 (based off of my last period which started on October 19th).  My husband and I BD'd every day during our fertile window... this morning I found light pink spotting, along with creamy CM discharge. This seems too soon for implantation spotting... unless i ovulated sooner than I thought? Should I be worried about different health issues with this spotting (also have mild cramps, backache... experienced mild sharp pain in the lower left abdomen last night). Any insights would be greatly appreciated.