Still not popping normally..getting concerned

Isa
Since day 1 Nia has never pooped everyday. She goes maybe 1 or twice per week. It's always huge soft blowouts. Doctor told me to start giving her sugar water because she needs to poop frequently. All it is doing is filling her up and making her miserable. She has tons of gas, I can hear her stomach gurgling and she's pushing (which is her normal routine). She passes wicked gas..eventually I insist Vaseline and Qtip or a suppository to help her go. I'm starting to get nervous...she's gone once or twice on her own.. But most of the time I've had to assist once it's gone passed 5 days. 
This week she went 9 days and I finally helped her. Again..since birth, she has gone only once or twice per week. 
Does anyone have an idea what's going on?