How do you know if your piercing is infected?

i got an eybrow peircing on july 8th of this year and just awhile back it excreated sum clear sticky liquid and it started to bleed a lot. ever since its exreated sum clear liquid and sumtimes blood. and also this lump that looks like a pimple apears on the upper side of my peircing. it did get tugged on harshly and the upper hole got opened up more so the little ball was able to go in but it closed up back to normal. please if it is infected is there a way that i cood just take better care of it so that it heals and i don't have to go through the trouble of going to the doctor. the peircing place gave me medicated soap called provon and h2ocean which is a salt water mixure. so please help!