Talk to Gynecologist on Periods Issue

A.o.a ..mjhy jan me periods huy to 7 days spotting rhe r 7 days normal means total 14 days..phr me dctr k lie gai bd me to ultraound b clr tha doctr ny yaz tblets deen k hrmonal issue hoga.. yaz len ap ..mene phr feb me jab period huy to first day sw lyni strt ki normal rhy period 7 dys ..nahany k 3 4 days bd se mjhy spotting horhe hy? Ye yaz ki wj se hy?