Here is a brand new way of finding out if you’re having a girl or boy without getting an ultrasound or amniocenteses, and before waiting until around 16 to 20 weeks.

A recently released study by the Institute for Behavioral Medicine Research at The Ohio State University Wexner Medical Center discovered that the immune samples of women who are carrying girls  produced more of a specific type of protein that caused an inflammatory response than those carrying boys.

Amanda Mitchell, lead author of the study and a postdoctoral researcher in the Institute followed a group of women through pregnancy and exposed their immune cells to bacteria in the lab.

Mitchell and her team noticed some significant differences that later was revealed in the gender of the baby the women carried.

“This could mean that inflammation may play a role in why some women who are carrying girls have more severe reactions to illnesses, making symptoms of conditions like asthma worse for them during pregnancy,” said Mitchell.

“Too many of these cytokines or too much inflammation can really be unhelpful for our bodies’ functioning,” Mitchell said. “It can create or contribute to symptoms like fatigue or achiness.”

So, there’s now some evidence behind the notion that women carrying girls may be more likely to have a harder time with illnesses during pregnancy than if they were carrying a boy.

Melissa Fox, a woman who took part in the study, says the results made a lot of sense based on her experience. Fox said her allergies abnormally flared up during the pregnancy with her daughter, so much so that she had to take and over the counter allergy pill almost every day. Check out her story below: