Last period

So, I haven’t had my period since March (last one was March 16th) but I’m not pregnant 😞

I went to the Obgyn was prescribed some hormonal medicine to make my period come. I’ve taken the pill from May 31 -June 9 but nothing yet. I’ve just been having stomach aches and feeling tired . She still wants me to wait 2 more weeks to see if period will start.