I'm confused...

So get this my OB called me because I have to call and request my prescription every month for my period pills and fertility medication so they said they can't give me my period pills because I'm gonna have my own period like my body should do it on its own and if I don't then I'm pregnant but I took a handful of pregnancy test over the weekend and they said negative and I told them that they said still can't that there 100% positive that I've I don't have a period I'm pregnant so how long do I wait as of tomorrow it will be 2 weeks since my ovulation