Hello, missed periods is nothing to do with Diabetes, stress at no periods is probably the problem! You woryy, naturally, that something is wrong or you're pregnant and so the stress builds up and you miss more! I had exactly the same a few years ago, I missed about 4 months in total, with no weight loss or gain and then all of a sudden they started again. I went to have a thingy for cervical cancer soon after it happened and asked the Sister there what it could be. She said that occasionally the diabetes can interfere with the nerve signals in the brain that makes us ovulate or the chemical we release in the womb doesnt happen and the period is missed. It's a hiccup that can last only a month or a lot longer. I hope that helps a little x