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- Flu
Had a penicillin shot for syphilis in my lower hip about 5 days back. The pain was pretty bad for a couple of days but then got better. Now I've got this hard lump at the injection site. Theres no redness or irritation and it's not visible, but I can feel it when I touch it, it's hard and a bit sore. Tried using a hot compress but the lump's still there. Should I be worried about it?