Thanks for posting your query.
There are many causes for irregular periods
It needs detailed evaluation through investigations like Ultrasonography
Further investigations like Hysteroscopy
would be necessary based on initial report.
I suggest you to consult a Gynecologist, since it is not normal to have irregular periods.
Infections, fibroids and many other conditions would present in this way.
Hope I have answered your query.
Wishing you good health.