Pumping if I'm EBF?

Christina

Okay I'm EBF but lately I've been pumping since baby has thrush and he gave me thrush on my boobs and it's just so painful to BF baby ATM.. the dr gave me prescription to put on my breast so I find it easier to pump and Bottle feed meanwhile I treat my breast and baby until the thrush goes away I do still BF mostly at night and early morning.. Now my question is I'll pump for 4/5 mins and get anywhere from 1-3 oz each breast then after 5 mins milk doesn't come out so I'll stop pumping I know normally ur supposed to pump 15-20 mins but after 5 mins milk stops coming out do I still pump if nothing is coming out ?? Does milk begin to come out again if I keep going ?? I'm confused ? Also if I BF baby and pump after how long do I pump for ? Can anyone help I want to make sure my milk doesn't slow down I just don't know if I'm doing this whole thing right ...