FHR means Fetal Heart Rate and it indicates the baby’s heart rate within the womb of the pregnant mother. The normal fetal heart rate can range anywhere from 110 to 160 BPM (Beats Per Minute) and also it can differ by 5 to 25 BPM. Fetal heart rate may increase or decrease depending upon the conditions in uterus.
It’s essential to monitor FHR (Fetal Heart Rate) during scheduled ultrasound scans as it will indicate whether the baby is normal in the pregnancy. An abnormal FHR (above >200 BPM) may indicate tachycardia whereas an low heart rate may indicate bradycardia.
It is normal to have Fetal Heart Rate for the baby above 160 BPM as it may differ from time to time and also based on the conditions of pregnant mother. The heart rate may be even above 180 BPM in some cases if there the pregnant mother is under stress or anxiety during ultrasound scans. In most cases there is nothing to worry as long as the heart beat is either above 200 BPM or below 110BPM.
Normal Fetal Heart rate ranges from 110 beats per min to 160 beats per minute. It differs sometimes based on the various factors including the expectant mother
There is no concrete research to suggest whether 150 BPM will be a boy or girl. It’s a myth that has been propagated by various resources
Once again there is no concrete evidence to identify a fetus based on Fetal Heart Rate. Recent research has suggest there is no absolute difference by which we can identify a male fetus or female fetus
Yes the 170 BPM is absolutely normal and the fetal heart rate depends upon various factors including the gestation age of the fetus.
Yes it’s absolutely normal. Though it might higher end of the normal. Many pregnant women in Reddit have suggested 180 BPM is absolutely normal from their experiences 
No one would be able to predict whether the fetus is boy or girl depending upon the fetal heart rate. In this case also if it’s greater than 140 there is no evidence to predict whether the fetus is a boy or girl