Talk to Gynecologist on Irregular Period

I don't get my period since a month and I'm very worried it never happen with me before I tested my hormones LH, TSH, Testrogen, prolactin and all are normal and in range I had never a PCO and PCOD diagnosed but now this time I don't get the reason kindly please help me I'm getting married soon and after a marriage I'm going to plan a baby help me doctor to diagnose the root cause of it