i was on depo

hey everybody I was on depo back in Feb of this year and missed my shot in May three months later I started feeling she could and my breast began to to swell an become very sore I took so many tests and they came back negative I went to the doctor and I told her I wanted blood work done and instead she made me take another pee test have anybody been on depo for a short period of time I only had three shots who can help me out with what's going on with my body I don't think side effects is suppose to last this long