I am 5.6 weeks pregnant I had an second u/s where the heartbeat could not be seen but there is a slight fetus growth compared to the first u/s which was done at 4 weeks where there was no heartbeat too is my pregnancy fine or is there something wrong when will the heartbeat start please answer my query I am 37 years this is my second pregnancy at a gap of 6 years my first child was born through c section