If you are sexually active and are not using any regular contraception I would advice you to do a urine pregnancy test first. If negative then get a thyroid function and Hb done. If these are normal and your cycles continue to be regular but scanty then it is important to exclude pelvic infection including tuberculosis.
Hello, Sanitary pads are still safe as you cannot forget them inside which is often seen with non regular users, and then can cause infection. So sanitary pads are better.
Having issues? Consult a doctor for medical advice