How much movement one should feel at 26 weeks

Siri
Am 26 weeks pregnant with a baby boy. I dont feel much movement of him yet. Very rarely like once a day or once in 2 days do I feel slight crawling kinda sensation in my lower abdomen. Is this normal? My doc mentioned that I may not feel more of the movements coz of my anterior placenta, but that was 3 weeks ago. Am concerned, anyone out there in the same boat? Any advices please?