Hi there, I have understood your concern. I will suggest you the best possible treatment options.
1 ) First of all do not panic.
2 ) To clear your dilemma about pregnancy, I will suggest you to get morning's first sample of urine tested for pregnancy. In case of doubt blood beta HCG test and USG will be of help.
3 ) If your pregnancy test results are negative, then your symptoms can be due to
progesterone hormone in the depo shot.
4 ) I will suggest you to opt for a healthy diet and regular exercise regimen. Include more portions of fruits, salads and vegetables in daily diet. Start on some
calcium supplements on daily basis.
This will help to prevent unwanted symptoms that you are getting. If you get control over these symptoms, then you can very well use the depo shot as a
contraceptive method in future. Otherwise, please use
intrauterine device like copper T, or Levo
Norgestrel containing IUD. another option us to ask for use of condom by your partner.
I hope this answer helps you.
Thanks.
Dr. Purushottam Neurgaonkar