Help!

My period is late by 63 days. (There is absolutely no way I can be pregnant)

For the past 7 months it’s been on time every month, but it hasn’t been coming lately. I tried the depo ONCE about 10 months ago, maybe that had something to do with it?

The past few months I’ve been getting pains near my hip bones, and my uterus, (really sharp pains that come and go over a day) so for a while I thought that my period was coming but it has not.

Should I worried? When should I start worrying?