Having your nasal passages all clogged up is pretty common in pregnancy, and it is quite natural to get worried if you also start having nosebleeds. However in truth, epistaxis (medical term for nosebleed)  is a common sign of pregnancy , occurring any time in the early, as well as later pregnancy.
Like most of the other pregnancy complaints, nosebleeds are also blamed on the elevating hormone levels. Your blood volume increases in the first trimester, remaining high throughout the third trimester, so the fetus can easily get all the nutrients necessary for proper development . The higher estrogen and progesterone hormones increase the blood flow to all the organs and tissues, including all the mucous membranes in your body. The extra blood flow causes the nasal mucus membranes to get swollen and tender, leading to nosebleeds .
You are more likely to have the symptom if you are carrying twins, have a sinus infection, allergies or cold. Dry environments like air-conditioned rooms, airplane cabins and cold weathers are other significant risk factors .
No special treatment is required in most cases, as the symptom can be cured with simple first aid techniques. Here is an easy way to stop the bleeding on your own by helping the blood clot :
The bleeding is most likely to stop within 20 minutes if you follow the above steps properly. You can further assist the blood clotting process by applying an ice pack over your nose and cheek with the free hand .
Taking the following measures for the next 24 hours keeps the nosebleeds from starting again:
The ICD-9 code used for indicating the symptom is 784.7 , while its ICD-10 code is R04.0s .