yes there is a very good chance that you have a secondary infection that may require more than just topical neosporin. i would suggest that you see a medical professional to have your oozing pierced nipples properly examined and treated. you may need an oral antibiotic.
i got my nipples pierced 2 weeks ago. they are dry & itchy an get crustys on the balls of the barbell. are they infected. i put neosporin on them and yesterday i started putting bandaids on them. when i sqeeze them i see nothing oozing out but the day after i put the neo on them i see crustys on the balls?