Is it still possible to have fibroids if you haven't had al period fpr a year?

Yes: Yes it is quite possible.

Yes: Having uterine fibroids is independent of your period. Fibroids are benign tumors that involve the uterus. While most pre-menopausal women with fibroids have no symptoms, it is very rare for post-menopausal women to have any symptoms (and of those they are usually recently post-menopausal and complain of increased urinary frequency).