Thank you for your question & photos! Liposuction will remove excess fat with some retraction of skin. A tummy tuck will address excess skin & repair of the abdominal muscle. The abdominal wall can be weakened after pregnancy and (or) significant weight gain & loss. By repairing the muscle, not...
It would be unusual for the symptoms you are describing to develop as a result of a tummy tuck 7 years prior. I encourage you to visit with your surgeon for an examination, especially since the symptoms seem to be worsening.
Cramping can be related to several causes. As yours are random and not severe there doesn't seem to be anything to worry about. Schedule a physical with your primary care doctor to make sure all bloodwork is normal, drink plenty of water and be sure to eat a healthy, balanced diet.