I have fairly irregular periods. I had a period January 13th, Feb. 11th, March 14th, and April 18th. It is now June 5th but no period. I started spotting a little yesterday and now its a pink/orange color? Should I be concerned? I was on the depo shot for a little over a year, and once I quit taking it, it took me over 6 months to get my period back and ive been fairly irregular ever since and ive been off the shot for almost 2 years. I am not currently on any type of birth control. Im 30 years old and have never had spotting until now. Could it be a hormone imbalance? I took a pregnancy test on May 27th but it was negative,