Help PLEASE!!!!

Ok ladies so stay with me. My last period was Jan. 8th!! I tend to ovulate late. This pregnancy wasnt planned so I can’t tell you when I conceived etc.

I had to go to urgent care for an x Ray and tested negative for pregnancy on Feb. 4th HOWEVER tested positive on the 14th. Does this add up ??? I’m so confused. Am I just not as far along as I’m thinking?? And that’s why my tests are still pretty faint?