I've been on depo-provera for two years is it normal to feel period symptoms while on depo-provera the cramping, bloating, & spotting its never happened before till now?

Yes: Your period symptoms returning can occur while on long term depo. Some patients can even resume periods again.

Sometimes: Your period symptoms returning can occur while on long term depo. Some patients can even resume periods again. A pelvic ultrasound can make sure there are no structural abnormalities or other findings that could cause spotting or bloating.