Are Headache, Sore Breast, Nausea And Fatigue Symptoms Of PMS?

I have been on the pill for 15 years and my last period on 05/01/11. The following 2 weeks after my period, I experienced headaches, nausea and fatigue. I'm not due for my next period until 05/29, (so it's too early for me to take a pregnancy test) but now I'm experiencing tenderness in my breasts and abdominal bloating. I'm still have headaches, but the nausea comes and goes. Is it just PMS?