Lump on pubic hair region?

I have a small half a pea size bump under my pubic hair, It was there before about 2 months ago but i popped it and i thought it was a pimple or something, it came back and i wasn't able to squeeze it, then i was in the shower just now and i popped it but nothing came out, i think i popped it inwards and now the lump is bigger, what could this be?