It is common for confusion to arise when it comes to calculating pregnancy weeks and months. The reason behind this discrepancy lies in the way pregnancy is measured. While a month typically consists of four weeks, pregnancy is measured in lunar months, which are slightly longer than calendar months. This means that by the time you reach 20 weeks, you are actually around 4 and a half months pregnant. To calculate your exact number of months, divide your current week count by four and round down if necessary. In your case, dividing 20 by four gives us five months. So rest assured, you are indeed five months pregnant! Remember that every woman's pregnancy journey is unique, so it's important not to compare yourself too closely with others or get caught up in the exact measurements. If you have any concerns about your pregnancy progress or need further clarification on timing, it's always best to consult with your healthcare provider.