What might be happen if i do some exercises like push up and sit up after got an lap appendectomy 2 1/2 weeks ago?is it dangerous? (just curious)

Don't: You should get clearance from your surgeon before starting any exercise program. Those exercises increase the pressure inside your abdomen and this may disrupt the surgery and/or the healing of the incisions.

Risk of Appendectomy: It is generally advised to wait about 6 weeks prior to any vigorous exercise even after an endoscopic procedure