Implantation Cramps???

Hi everyone...I'm new to this group, TTC, i have a 3 year old DD, and me and DH decided we would try for baby number 2. I was previously on the Nexplanon Implant for Birth control had it taken out Apr. 11, and have been BD since the day after removal..today i woke up with mild cramps on the my right side could this be implantation cramps or my body regulating after removal ?? also have experienced pain in breasts. BFN april 17th. Advice ??