Cramping for almost 2 weeks?

I am currently 12dpo and 14 days past trigger shot. I had a negative test today but I have been cramping fairly consistently since 6dpo. It has ranged and varied in both intensity and type of cramping but has really not gone away. I know for sure they don’t feel like period cramps and they’re all across the bottom of my abdomen near my pelvis and at times in my back.

I called my doctor and he said to just continue to wait and test at 14dpo or wait until a period starts. My concern at this point is, could this be something like an ectopic pregnancy? I had always known those to have positive tests still but wondering if sometimes they don’t. Idk but I’m sick of waiting.