Sorry about this in advance, i really have no idea. Thought someone might be able to give me peace of mind

This is my first pregnancy, (16 weeks) I felt baby move a few days ago, Am i supposed to constantly feel it moving around? i have not felt it since i woke up.
I really do not want to be paranoid 24/7 about this. Movements are so light, and currently do not have a midwife. And no one to get information from.