any idea what’s wrong with me?

hi! for the past 6-8 months I have been getting random bruises on my legs, mostly my thighs as shown in the photo. they’re usually not too big or dark but a few days ago I had these appear on the back of my left thigh & they’re painful as well. I started taking iron supplements about 6 months ago to see if that would help- but no luck. I am going to see a doctor soon & get some blood tests. I just wanted to check here to see if anyone else has ever had anything similar or know what could be going on? google searching your symptoms is scary🤣 so maybe there are doctors/nurses here with some professional insight!