Its possible, but you sitting there wondering and not knwoing either way isnt gonna help if anything is only gonna make thigns worse, best thign to do is go do a test, that way you knwo either way.
If you are and you arnt getign sick.. Count your self lucky!!!
The pain in your side and be a number of things, if it sreally severe and continious go to the hspital straight away, it could be an etopic preghanncy and they can potentially kill you.
Good luck