Baby only nurses on one side

Li
My 11 week old daughter only likes to nurse on my left side. My right nipple is pointed downward which makes it hard for her to properly latch on. She's perfect with the left nipple. Anyways, my right boob has had a decrease in milk (she only nurses on right side maybe 4 times a week, she hates it and starts screaming until moved to other boob). I try to pump my right side, hardly anything comes out. I've tried to do skin to skin on the right boob, drink lots of water & Gatorade, and of course tried to nurse her on it to no avail. Thoughts? Advice? I'm not sure if I should worry about it or not. She has 6+ wet diapers a day, and is gaining weight accordingly....