Hi, my daughter has a lump on the right side of her neck , it seems to me like it actually in the skin, it about the size of my thumb tip, slightly raise with a scar like feel to it (never had any injury there) its quite soft. Should I take we to our gp? Shes also very emotional which is unlike her. She s had it around 5months, maybe longer but we first noticed it around 5months ago. Thank you