I REALLY NEED ADVICE!!!!!!

My period never came yesterday. I am always regular. Last month on the first day of my period I started taking BC pills. I had gone to an OBGYN and she suggested taking them for three months because your body can tend to "super" ovulate after stopping BC causing you to be more fertile. I took the pills for about a week and a half, but once my fertile window started, SO and I couldn't stand the thought of having something prevent a baby and I never took them again. About a day later, I had spotting off and on for about four or five days,which I found was my withdrawal bleed. Now,no period at all. is it possible that it has messed with my period or could I be pregnant? SO and I did the deed the twice during my fertile window and a few times after. I'm having one really sore breasts,both are full. I have had constipation and headaches, not lasting very long. I've also had a horrible cold the past week. Like I said, I don't want to get my hopes up and I'm too afraid to take a test just to see a negative. I keep telling myself it's probably just the BC messing with my cycle, but I can't help but have a slight hope of it being a growing baby!!! Any and all advice would be greatly appreciated!!