What should I do?

From my experience the employer would rather have you report it then let it go and end up becoming more of an issue. I got cut buy a peice of glass that had been sittin in the garbage. I blew it off for a while until it started swelling and oozing crap. I went to the doctors and got a few shots and some fancy pills. Turns out the boss was mad at me for not speaking up earlier. Had a friend fall off a ladder and hurt his knee 5 years ago. Blew it off until last summer when things got real
Bad. He was screwed since he waited so long and he had to fork out big bucks.