Pay attention to pain. Proper exercise should reduce pain, not cause it. If you have sharp or shooting pain, stop doing that exercise. If done correctly, it also should help your bones, tendons, ligaments and muscles become stronger.
Note: There’s good pain and bad pain. A physical therapist told me to think of my pain this way: When any pain gets over 3 on a scale of 1 to 10. It’s time to stop. When lifting weights my therapist said, form is more important than the weight of the weights. It’s better to go lighter and have excellent form than to go heavier with poor form. The latter is a recipe for injury.
Source: Mayo Clinic