I had some light pink spotting late last night and this was early this morning. I have had some cramping the last couple days. Mostly some pains in my left pelvic area. I’ve had some indigestion, frequent urination and craving water. Like can’t get enough water. On average I’m a 28 day cycle but sometimes 27 and 29. Due to start my period on Tuesday. Could this be implantation or is it too late for that? I took a FRER this morning and it was negative. How long after implantation is a test typically positive? I don’t typically spot before my period but that is also still a possibility. Thanks for all advice.