Experts recommend that pregnant women limit the amount of caffeine they drink each day. Women consuming high levels of caffeine during their pregnancy can result in their baby having a low birth weight or even miscarriage. It is recommended that you do not have more than 200mg of caffeine a day.
The amount of caffeine found in some foods and drinks is as follows:
one mug of instant coffee: 100mg
one mug of filter coffee: 140mg
one mug of tea: 75mg
one can of cola: 40mg
one can of energy drink: up to 80mg
one 50g bar of plain chocolate: most products on the UK market contain less than 25mg
one 50g bar of milk chocolate: most products on the UK market contain less than 10mg
So, in one day, you will almost reach your 200mg limit of caffeine if you have:
two mugs of tea and one can of cola
one mug of instant coffee and one can of energy drink

It has also been suggested that massaging premature babies helps with; Improved weight gain, particularly if oils are used. Massage stimulates a key nerve, called the vagus nerve, which connects the brain with important parts of the body, including the stomach. Stimulating this nerve can improve digestion and bowel movement, helping your baby to gain weight.