TTC & changes in PMS/period symptoms

Renu
So, as I'm nearing my AF date and scrutinizing every little possible pregnancy/PMS symptom (and getting happy/sad in the process), there's one thing I've noticed - 
​The symptoms I normally feel a week or so before AF are different now than they were maybe 6 months to a year before. For instance, before I almost always had sore, tender breasts. Now I never do! I never used to feel slightly nauseous or specific food aversions before AF, but in the last few months I feel this way before AF pops up.
​Do you get consistent PMS symptoms each month? I wonder what changed in me...