How to clear scarring on bum after a possible major flea attack?

I recently broke out with many itchy bites all over my body and they have left scaring especially on my bum cheeks.. It is incredibly itchy and leaving pink spots everywhere. It seems to be getting better but it is literally everywhere.I have been applying a herbal cream called extract after showering but as said before there are major pink marks everywhere. On my arms, hands, a little on my lower back and a lot on my bum. I do not have the money at the moment to see a doctor.

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