Ay, that bloating and weird sensations can happen with injectables talaga, especially after a few months, a few of us mums noticed it kicked in later rather than right away, so it's possible na yan lang side effect na delayed. The good news is injectable contraceptives are super reliable kung on time ka talaga with your shots, so pregnancy risk is very low, pero to be 100% sure at para ma-ease your mind, better mag-check ka with your OB kasi that bloating + movement feeling deserves a proper check-up, baka may ibang cause din or the doc might suggest adjusting your method.