Talk to Gynecologist on 4 Day's Late Period

Aoa dr mujhe ya pochna tha k mera 26 day's ka cycle hai ma last 5 months sa conceive karna chah rahi ho mujhe har month exact date py periods atay hai iss month mujhe periods 4 day's late ho gy hai but mujhe last 1 week sa bohattt pain ho raha hai back ma b lower abdomen ma b fatigue hai Bohat chirchira pan periods b nahi ho rahy pain hai sirf kindly guide me k ma kiaa karo please