Hello ladies !!

So my baby was born March 7th....
First few days I didn’t really have breast milk so they gave me similac at the hospital to feed her.... a few days later I started producing breast milk and have been greasy feeding her since then. I’m just wondering why her tummy is always rumbling. She’s never crying so I doubt she has a colic pain. It rumbles before she’s eats, during , after, and when she’s sleeping. Do you guys think that is normal ? I was thinking maybe it is something that I’m eating that is causing her tummy to rumble all the time ......
She has a doctors appointment on Monday and of course I am going to mention it to the doctor. Has this happened to any of your baby’s ?