Implant removal

I had my implant since July 14th, hadn't had a period the whole time. Got it taking out in may 2015 had a period for April, May, June and in July it stopped I haven't had a period since June. Went to the doctor he said that the blood test was negative, then the doctor told me to go and get an ultrasound. Has this happened to anyone. I just wanna know what's going on with my body and the doctor doesn't even know