###Human: I am suffering from irregular periods. I am currently on levothyroxine. Please help. ###Assistant: Hi. From your query, I understand that you are suffering from hypothyroidism. I need to know when was it diagnosed, and what was the thyroid profile at that time. Irregular periods and weight gain is a part of hypothyroidism. I would like to modify your dose as well as advise you ways to reduce your weight. All will be well once we modify your dose.