Hi.I Have Always Had Normal Periods Without Any Delays,but Because

Hi.I have always had normal periods without any delays,but because I wanted to go to a trip I started taking belara from 2 months before it.I had bleeding for 17 days taking belara and I went to a DR who prescribed medroxy projestrone to stop my bleeding.My bleeding stopped but I havent had my period for 3 weeks now that I have stopped the drugs.I really need to have my period before going to this trip and I dont if I should take Belara again because it changed everything in my body and mood swings and everything.What should I do to have my period