Thanks for your query,
Hotflushes occur due to fluctuations in hormone levels, particularly drops in estrogen
. In triplet pregnancy
the harmonal changes are more , thats why you are having these symptoms.
Generally, hot flashes are more common in the second and third trimester.
Hot flashes that come and go are perfectly normal. Precautions which you can take are avoiding spicy food, caffeine, alcohol, smoking
, very hot environments and do relaxation and mild exercise like walking may be helpful.
Hope it helps you..