How many months is 15 weeks of pregnancy?

At 15 weeks of pregnancy, you are just over three months along—only one week short of completing four months. A full-term pregnancy lasts approximately 40 weeks, with each month defined as four weeks. By week 15, the first trimester is complete, and you have entered a critical period for fetal development. During this stage, it is essential to enhance your nutrition by consuming more foods rich in protein, minerals, and folic acid, all of which support healthy fetal growth and development. Additionally, regular prenatal checkups are crucial, as they help reduce the risk of fetal abnormalities.