Hi,
Welcome to ehealthforum,
It is difficult to comment on the cause for your symptoms without examining you. Few of the symptoms can be attributed to the procedure done. Consider visiting your gynecologist/obstetrician at the earliest for follow-up check and further evaluation to look for the underlying cause. Treatment as needed (based on examination and investigations results) would be started to help you regulate your periods. Be in regular monitoring and follow-up with your treating doctor/gynecologist and report any new/abnormal symptoms immediately. Take adequate rest. Drink plenty of water. Maintain healthy & balanced diet and healthy lifestyle.
Take care.