Am I feeling my baby?

I’m 17w2d and I’ve been feeling this for a couple of weeks but this week it’s increased by a lot. When I’m laying on my side I feel these little flutters like gas sometimes they can last a few seconds and other times its only a split second. Also sometimes when I put my hand on my belly it’s like feeling a heartbeat but it’s so faint. I’m a FTM so I have no clue what it’s supposed to feel like. I hope I’m feeling my little man because it makes it all so real when it’s happening 💙