I am having missing and irregular periods for a year. My last period was on 1 June. my normal cycle is 35 days long. Sometimes they occur after 22 days and one time after 15 days. in between spotting occurs but not occasionally. I am allergic and asthmatic and take medications for them. I have had leukorrhea in my teenage years, and I was not aware of it until I started having vertigo, sudden severe pain in the abdomen and chronic pain in the lower back which is still present. I take mefenamic acid for back pain and cluster headache