Hello, I am currently on the Nexplanon implant. This is my second time having it. Recently I have had unprotected sex and I have some symptoms that worry me. I have been very nauseous, had cramps, spotting, discharge, bloating and I have been lightheaded. The entire 3 years I had my old implant plus the few months I have had this new one, I have not had these symptoms until now. Are these symptoms of the birth control or could i have a chance of being pregnant? Or could it even be endometriosis? (my family has a history of it)