Feeling movement

It’s my second pregnancy but my first was 12 years ago, I’m 19 weeks but hardly feeling any movement and what I do feel is so faint I don’t know if it’s baby or IBS 🤦‍♀️😂 has anybody else had this in there second pregnancy? not had a scan in 3 weeks next one isn’t for another 2 and I’m worrying, thank you for any replies.