hi cobby,
You are doing all the right things by getting it checked out, mostly, all's well, but if it is more serious, then the earlier the better it is to get it sorted.
In respect if your mum, it could be that if we all live long enough it will be something & there would not necessarily be a link. With heart disease, for example, only early onset heart disease is considered relevant in family history.
do take care
ann x