Quoting OneBlessing:" Its NOT gas bubbles. Last time I checked, when I get gas bubbles I actually fart or have a BM not too ... [snip!] ... At 10 weeks I felt the same thing. It was more like the sensation of a fish swimming. Its an amazing feeling. Congrats!"
So, you know for sure
she's not having gas huh?
OP - I think the chances of it being the baby at this point are pretty small, but I suppose it's not impossible. I felt DS for the first time at 14weeks, which is pretty early for a first pregnancy, Congrats!