Hello I had gone through your question very diligently and I can understand your concern your need not to worry, your symptoms are not related to tubal ligation. Irregular periods can be caused by numerous reasons like Hormonal imbalances infection like UTI or STI endometrial hyperplasia DUB dysfunctional uterine bleeding Stress and anxiety related Diet In my opinion you should book an appointment with a gynaecologist for clinical examination and series of tests to establish a cause for this unusual bleeding If you can write back to me with more related and relevant information, I will be tell you more accurately. wishing you good health. Regards