That is perfectly fine! I'm just about 28 weeks and for the first time I am able to say I have felt movement for four days now. (Now that I wrote that he will probably be stubborn and stop! Lol) so you pretty much sound the same as me. Maybe we have lazy babies or maybe they have their backs to our fronts. Either way, they are there and I cannot wait to meet my love bug!
If you have a light on your phone try shining its against your belly:)
My girl moves frequently but mostly at night is when its most consistent... with that being said when she doesn't I freak out then I have a tricks to get her moving like putting music to my belly or lightly tapping two or three times its called baby tag.. she usually kicks right back when i tap. then there's always certain food or drinks that I kno she reacts to..