Could it be???

So I'm 18w+5, as of yesterday around 11pm- midnight, as soon as I sit still, I've been feeling flicks/bubble pops in my lower abdomen. This is baby #2 for me, but it's also been 8 years since my last pregnancy! Idk if it is what I think it is because I'm so in denial about when it'll actually happen! But it's happened again tonight! I distinctly remember what baby hiccups felt like inside as my daughter had them nonstop, but I don't remember early movements, just the later 2nd trimester kicks. Could this be baby?? I honestly wait to pass gas after the bubblys but I never do and I'm trying not to get too excited! TIA