Depo-Provera injection and lighter periods

For the first few weeks, it was brilliant, my period was stopped and when it did come it was much much lighter which was what I wanted, however, I did still get cramps. In the last month of use (my injection lasted from May-August) my PMS symptoms became much more severe and lasted much longer. Instead of feeling nauseous for one or two days in the run-up to my period, it was four of five days of increased anxiety and low mood. Now that I'm coming off it I am suffering from withdrawal bleeding (which has lasted almost three weeks) and cold-like symptoms along with nausea.

Worked as a contraceptive however also lowered libido and gained quite a lot of weight quite quickly in places i dont usually (legs, bum, tum), my appetite increased a lot. I experienced pain when walking/running at the injection site on my bum - I had 3 in a row on the same side

I was happy with the injection at first - it was only one injection every 3 months and it made my periods a lot lighter. However, I gained weight and really struggled to lose it no matter what I tried (to the point that I went for blood tests to check for thyroid issues), and it affected my mental state very negatively.