i think i was bitten by sometngnot sr went to the doc she said they couldnt really tell what happened,they saw 2 prong holes but the holes were covered like skin laying over it ,it got big like nickel size a little itchy then soar when pushed on now its been almost a week and now its down to the size of a pea,i just wabt to know what it is it doesnt bother me only if i push on it it feels like a little round ball so it has been going down alot s should i be concerned?