Hi, Imhave Just Discovered A Big Lump Behind My Daughters

Hi, Imhave just discovered a big lump behind my daughters left ear where the earlobe joins the jaw, I have removed her earring and when I press the lump pus and blood comes out but she says it hurts to press it.

It has gone down slightly since I pressed it, she has never said this ear was sore at all and I just noticed it tonight at bath time.

There is no redness or swelling at the actual ear piercing site and she has had her ears pierced for a year.

Should I take her to the Gp on Monday to get it landed, drained?

Thanks

Mrs MacLennan