Talk to Gynecologist on Misscariage

I had done IVF treatment after 7years of trying everything else. It worked. I got positive but then instead of doubling beta hcg it started to decrease. So dr said no hope now and wait for your periods to come it will come with in a day or two. Its been 5 days. No periods i am in very very much pain like cramps. Alooott. Please help me how do i get my periods now as soon as possible so everything comes out of me.