Dark circles, fatigue, pale lips. All?

I am on medications of iron and B12 for 1 month, I get dark circles whenever I get UTI, but in previous times it used to disappear with a few days of medications. Now this time I got and I didn't diagnose it for 6-7 months and then when I did my dark circles didn't go away, it's been 1months and I am taking medicines of iron regularly but they didn't go and also my lips are also a little darker, but my hair falls have reduced a lot in this 1 month. Can there be some else reason for dark circles other than described? I also can't wear earphones because my ear starts paining after it. In those 6-7 months when I had UTI, I felt fatigued and when I recovered from UTI, I checked my HB it came to 8.8 but after that, I took iron pills and spinach juice on an irregular basis but still I took it. I still have 1 month left for my anemia treatment. Do you think anemia is the reason for all?