 [ Symptoms ] what causes fertilised egg not to inplant in uterus  from my last 2 periods i have observed my periods getting 5 6 days late than usual i suspect egg is gettign fertilised but somehow embryo is not implanting and causing biochemical pregnancy it did happened to me in past when trying ivf can some expert confirm my suspision that it is biochemical pregnancy and why embryo is not impanting [ Disease ] many possibilities as irritable bowel syndrome ibs inflammatory bowel disease crohn disease and ulcerative colitis malabsorption syndromes in which food cannot be digested and absorbed try to make a food diary and see what aggravated it yoga and meditation are helpful