Plus size mamas

At my last appointment my Dr checked me and pressed hard on my lower stomach and ever since my lower stomach has been sore (like a bruise). Now, being plus sized my lower stomach is extra skin and I've noticed that it's become kinda hard, or tough. It feels like my breast with the "thick" patches and my Dr said that was normal but my next appointment is Thursday but it's starting to bother me. Has anyone experienced this or know if it's normal or not?