<s>[INST] Hello doctor, Actually, I get my periods once in 40 days for one month and within 28 days the other month. It is continuing for a long time. Previously, I had one miscarriage and vaginal infection. Currently, I am on Folinal. Please help. [/INST] Hello. Periods can be irregular. It can be normal. When periods are irregular than there could be two problems. One is difficulty in getting pregnant. And second is more bleeding and the variance cyst. Do FSH (follicle-stimulating hormone), LH (lutenizing hormone), Prolactin level, estrogen, progesterone, serum TSH (thyroid-stimulating hormone), andone ultrasound scan. All these investigations to find out anything abnormal. If anything found then treatment can be given. Or you may require treatment if you want to conceive. If everything found normal and you also do not want to conceive now then there is no need to take any treatment now. Do drink more water. You can elaborate on other problems if you have. </s>