Hi,
Welcome to ehealthforum.
It is difficult to comment on the symptoms of irregular periods and abdominal sensations that you describe without examining you. Possible causes include hormonal derangements, ovarian problems like PCOD, endometriosis, anemia etc. The exact underlying cause for your symptoms, abnormal bleeding, and irregularity of periods, can only be made out after careful evaluation. Consider visiting your doctor/gynecologist for thorough examination and further evaluation to look for the underlying cause. Treatment as needed (based on examination findings and investigations results) would be started to help you control the bleeding and regulate your periods. Consider being in regular monitoring and follow-up with your treating doctor/gynecologist and report any new/abnormal symptoms immediately. Drink plenty of water. Take adequate rest. Maintain healthy diet and lifestyle.
Take care.