Counting kicks

Anyone been told to count kicks?? I'm 27+3 & at my appt the other day my doctor told me it's time to start keeping track. Now I'm paranoid about it because I don't really feel him moving a lot during the day when I'm work. Maybe occasionally when I'm at my desk but nothing consistent. Last night when I was laying on the couch I didn't feel anything for awhile and of course freaked out till eventually he started moving. Anyone else have anxiety of kick counting lol