Hi Doctor, Im Continuesly Losing A Lot Of Hair Specially

Hi doctor, im continuesly losing a lot of hair specially on crown area and currently taking Aldactone, perfectile oral & minoxin solution spray twice a day. Will that workable coz im under these medi for almost 3 weeks but do not see any positive results yet..Do i need to process thyroxin testing? Or this is not related to that? Or is this something different?