Minimum Pms symptoms before af.. now they won't go away

Strange... last month I was a day of two late, no symptoms and fairly light period with hardly any cramping. A breeze! After it finished I noticed my breasts had gotten sore. I figured it would go away. It hasn't. It's been two weeks since and my chest feels like Pms a few days before af is due. It's frustrating! I took a test just in case last week (would be a week past af) and negative. I'm almost 31yrs TTc first child. Have symptoms changed for anyone else as they age? Should I be worried? I doubt there is still a chance but I hate this new norm.