I was supposed to start my cycle on the 22nd of October, but I didnt. I started spotting on the 25th which was a reddish brown. The 26th there was nothing, then on the 27th I started what I thought was my period. It stayed the same reddish brown color and was very light. It was the same on the 28th. Then on the 29th, it stopped. It never got any heavier and never turned a red, just stayed brown. Should I be worried?