Help!

Alyssa

Quick question.. I'm not sure exactly when I ov, and my af isnt usually completely normal. It's close but I do have a few abnormal ones here and there, Its normally about 28-30 days with af lasting about 4 ish days. Anyway, we bd'd every day of my fertile period and I'm now having a very slight light pink spitting (pretty much pink cm) its cd18 so I'm curious if that could be implantation spotting?