could i just take Provera ?

Hi,
Welcome to ehealthforum,
Provera is also a form of hormonal birth control. If you are planning for pregnancy, it is important that you stop hormonal birth control use. If you are trying for pregnancy, it is important to have regular periods. Regular periods suggest that you have regular and periodic ovulation. Irregular periods are usually associated with anovulatory cycles (menstrual cycles without periodic egg release from ovary). Other causes include: hormonal derangements, ovarian suppression, PCOS etc. It is difficult to comment on the cause for the irregular periods without examining you and going ahead with further evaluation. The exact cause can only be made out after careful evaluation. You should consider visiting your doctor/gynecologist at the earliest for thorough examination and further evaluation to look for the underlying cause for the irregular periods that you describe (you may also consider taking second opinion from another gynecologist). Treatment as appropriate (based on examination findings and investigations results) would be started to help you regulate periods.
If you are trying for pregnancy, monitor cervical mucus changes and the BBT (basal body temperature) charting to predict your ovulation (along with the follicular study) and time your intercourse for having fruitful results. Have intercourse in positions that allow for deeper penetration for high deposit of semen. Have diet with foods rich in zinc content to ensure better maturation of egg and sperms. Be in regular monitoring and follow-up with your treating doctor/gynecologist and report any new/abnormal symptoms immediately.
Take care.