am getting period like symptoms on day 17 embryo transfer. Does this mean I am not pregnant ?On day 12 my blood test showed , am pregnant. Having my Urine and blood test again in two days. Since I get more cramping on legs and abdomen , I am confused.I took some tablets till 12 th day of my ET. Now drs told me to stop medicines. Does it mean the positive result ended because of medicine. Pls help and give me suggestions...I am totally worried.