adenomyosis & abortion

I am 37 and was pregnant for the 1st time in my life this yr in Feb. Unfortunately it was poor timing and we opted to terminate. I had a surgical (suction) abortion at 7 wks on 3/17/10. I have had no periods since, but experience horrible sharp cramping (and migraines) when my period SHOULD arrive. I am on the pill and am definitely not pregnant (tested yesterday via bloodwork at hosp.). I have been to the dr regularly testing to see what this issue is/ why no periods. We have completed a physical, a pap, blood and urine tests, pelvic exams and ultrasounds. My only finding was that I apprently have adenomyosis.
I found this diagnosis to be odd. I was on the pill from age 16-37 (stopped it in Dec thinking it would take months and months to get pregnant hence being stunned at the Feb pregnancy, as I was hoping to get pregnant much later in the yr- we simply were not yet ready.) I have never, ever had cramps or pain at any other point in my life. Only since the abortion have I had these sharp pains, yet no period. I thought if I had this condition, would I not have heard of it earlier? Felt these pains before? Why now?
Any thoughts on this?
Can the surgical abortion procedure inflame or irritate this condition??
I am seeing a gynecologist shortly to find the cause of my not having periods. I have no fever or vomiting, no signs of infection otherwise but have kept thinking to myself there must either be a blockage of some sort of scarring that is not allowing menstruation to occur.
If there is a blockage or scarring, is it unsafe/ unhealthy or are there any risks to not menstruating?