@pueble man. sorry that ovulation does not mean you are pregnant. Ovulation is a term that means your ovaries have released an egg. If that egg then becomes fertilized by sperm, THEN you are pregnant.
To answer the question... Yes it is possible to ovulate without a period. The reason I know this is because I just had a partial hysterectomy. Since I kept my ovaries, by doctor told me I will continue to ovulate until menopause. Hope this helps