Unfortunately, if you are pregnant, the odds of it being an ectopic pregnancy are VERY high. The tubes would literally have to reattach for there to be a path from the ovary to the uterus. This leads to scarring.
You can take a home pregnancy test. Be sure to use your wake up pee for the best accuracy.
Even if it is negative, if the symptoms continue you should see your doctor. It could indicate a possible infection or even a cyst.
Have you taken a hpt? or visited your gyno for an exam or blood test