Flutters

I've been trying to figure out if what I'm feeling is flutters.. I'm 17 weeks and I did the whole flash light to my belly and didn't feel any sudden movements or flutters.. my midwife said baby can now hear sounds (even though they sound muddled up to baby since they are basically like in a pool of fluid) so I've played music trying to see if I feel anything and nothing. But at random times I feel like small bubbles in my lower stomach. I'm so confused.

Any advice on how you ladies felt your first flutters? Good laying positions? Things to eat/drink? Anything? I just want to know baby is okay.