Breastfeeding while on Phenazopyridine hydrochloride

I have a very painful UTI and just took phenazopyridine hydrochloride. I have a four week old infant that is being fed with breastmilk from a bottle that I pump. I would like to know if I should pump and throw away the milk while on this medication and if so how long after I stop the medication should I continue to throw away the pumped milk.

Thank you,

Kim