The right blood pressure and blood sugar
level 

You should follow up on these in all the trimesters.
This is because during pregnancy, the levels fluctuate. It is very common for
pregnant women to experience high blood pressure during pregnancy. However, if
the spike in level is sudden and very high, it can lead to a condition called
preeclampsia. This is a severe condition and may even arise the need to go for
a preterm labour. 

The placenta’s position 

For a pregnancy to be successful and not end in the
serious condition of miscarriage, it is vital for the placenta to stay inside
the uterus and attached to it till the end of pregnancy. This is very crucial
because if the placenta is detached prematurely, it can lead to termination of
the pregnancy. For this, the uterus as well the placenta of the mother should
be healthy. 

The right growth of the foetus 

As the months progress in pregnancy, so does the
weight of the mother. If your foetus is growing right, it will reflect in an
increase in your weight or through an ultrasound. If there’s any hurdle in the
process, the foetus will not grow properly and hence, it can cause a disruption
in your pregnancy. 

Gaining the right weight 

If you weighed within your normal range when you were
not pregnant, then the increase in weight during pregnancy should be around 13
to 15 kilos. However, if you were always on the higher side of your weight and
were overweight or obese, the doctors would advise you a comparatively lesser
weight gain. 

The levels of progesterone and oestrogen 

These two are the vital hormones of pregnancy. Their
optimal amount in your body will determine if you have a healthy pregnancy or
not. The role of both these hormones are as follows: 

Progesterone:
When a woman is pregnant, she produces twenty times more progesterone than a
healthy non-pregnant woman. That is, in pregnancy, your body produces 400 mg of
progesterone, as compared to 20 mg which a healthy, non-pregnant woman
produces. The hormone is required to keep the menstruation away by setting up
the endometrium. 

Oestrogen:
This hormone is needed for the growth of the uterus from 60 grams before
pregnancy to 1200 grams during the pregnancy. 

The growth of the belly 

For this, a doctor will guide you if the increase in
the size of your belly is normal, more or less. 

The foetal movements 

The foetal movements are indicators of the baby
receiving an optimum amount of oxygen in the foetus. The pregnant woman will
start experiencing them ideally between the 6th and 10th week of the pregnancy.
The doctor will keep a check on them to make sure that your pregnancy is
healthy.