Anyone else?

I am scheduled to start Thursday (according to glow) but since stopping depo almost 2 years ago, there seems to be a great deal of variation in the timing. My husband and I opted not to “try” this month as it’s been incredibly difficult to get bad news month after month of concentrated trying, a miscarriage and a chemical. However, we went about enjoying our intimate life as we wanted and without prevention. Since I did not use opk this month I have no idea when I ovulated (which has also been quite variable). Here’s the deal; until this cycle, I’ve never experienced sore nipples/breasts pre-period, I’ve had light cramping and the slightest pink spotting when I wiped once yesterday, I have this horrible pinching discomfort in my lower back, and I’m exhausted. I did take a test today and negative. Has anyone else had similar experiences? The only other time I had anything at all with my breasts was when I was pregnant.