Baby movements

How many weeks were you when you first felt baby’s movements? I’m a little concerned I haven’t felt anything yet. My 16 week appointment is on the 29th so I’m thinking I can bring it up then, but I also wanna go to the er just to make sure everything is still cooking in there. I’ve also had some cramping a few times this week, no spotting or anything like that. Am I just being worried? Is it something I should involve a doctor/trained med professional about? Is patience really the key here?! Help