Swimming while pregnant

So I’m 16 weeks exactly and have been swimming more recently now that I have my energy back. Anyway I’m not sure if I felt the baby move before or if I was imagining it. I was laughing when I felt something weird. So I put my hand where the baby should be about and I am pretty sure I felt her kick my hand. Would that be possible or is it still too early to feel any movement? This is also my first pregnancy so I’m not sure what to expect.