Lori
I've been going thru the same thing - I'll be 40 next week. Have your gyn or family doctor order a FSH blood test - that result will show whether or not your peri-menopausal or not. I've never had PMS symptoms before either until about 6 months ago. My gyn said that it is normal to have certain changes as you reach 40ish. You may need to have your birth control pills adjusted, maybe ones with a higher/lower estrogen level.