shortness of breath

Mom has experienced shortness of breath a few times.  This evening it lasted about 10 minutes.  She breathes heavily and can’t seem to catch up.  This has apparently happens a lot.  Things like this come and go.  She used to experience “panic attacks”, as she and her doctor call it, but they seem to have quietly subsided the past few weeks.  Now this shortness of breath happens instead.  Previously, pains in her side, cramps in her foot, and other things ailed her.  Now, a half hour later, she’s back in the living room watching TV, seemingly without breathing problems.