You are now about 10 weeks from surgery, so activities may have have returned to normal, but healing and scar maturation have months to go before completion. It also takes 6-12 months for sensory nerves to maximally regenerate, and for lymphatic vessels to heal, regrow, and swelling to finally reach their new baselines.
Muscle spasms can occur as inflammation and scar tissue from your muscle repair go through the same healing process as nerves, lymphatics, and your skin incision. Most patients' scars can take a full 6-12 months to mature fully and fade as much as possible. This is why ultraviolet avoidance (or sunscreen use) is recommended for the same 6-12 months after surgery.
Massage, ultrasonic treatments, gradually increasing exercise, and time will all help your spasms to resolve. The important thing to realize is that these spasms (although sometimes quite uncomfortable) are NOT a sign of any problem, and always get better. Best wishes! Dr. Tholen