Does anyone else have this symptom? Once a month my breasts do their usual thing where they are sore and all of that, but I notice that over the last 6 months, my left breast seems to bother me more and is more sensitive. I also noticed that during this time my left armpit seems to break out in small zits. Really, my whole left side just feels different from the top of my ribs to my collarbone. I sometimes feel this in my right side, but always my left. It eventually goes away and will always come back each month. Is this a sign of peri?
It really bothers me because my head starts playing games with me making me thing I have breast cancer which inturn makes me want to check my breast daily and I know thats not good.

I've have a mammogram, ultrasound and MRI (due to having dense tissue in my left breast) and all came out normal.

Does anyone else have symptons like this?

My left side feels different from my right side. And everythng always seems to hapen on the left side: that's the side of back, hips, and knees that bother me. Back to breasts: left breast is a little bit bigger and I think that's were all the "different" feelings come from. Mammo came out fine so I'm not going to worry overly-much about it.