Yes for Indica Dominant Strains this is Normal. Nothing to be concerned about at all. You have the flowers. Your in the clear. With a Flowering time of 7 weeks that's relatively short and I would expect a short stretch phase with Indica Genetics and the Short flowering time. If you were growing a Sativa Dominant Strain this might be a bit more of a concern but still not the biggest concern. Iv'e seen "stretches" of 2-3 feet and Iv'e seen stretches that looked basically like a Zero stretch.
They have stretch a bit but you'r right it's not even noticable ! I've never had that kind of stretch but it seems that your strain is an indica dom that is remaining short , check at the strain description