Hello dr. I m 35 yrs old . i am feeling strechness and movement from inside near belly button . My last lmp was 3 sep 19. My period is yet not come . i have done both hpt and blood pregnacy test , both r negative. I am feeling like vomating , cramping , back pain . i have done 3 failed ivf procedure . what should i do now? . what is the reason of delay period. I have started some yoga postures last month like leg on the wall position , bridge position .because of this my period is delay?