Pregnancy question , please urgent.?

Me and my fiance been having unprotected sex , eversinse Mother's day. ive been having pregnacy symtoms all month long, at first io rushed to take a test and tested false now i have my period. Is there any tip or ways i can get pregnant. ive been to the gyno and he said am prefectly fine. Any positions or tips? Help please. we really wanted to start our family.