Frequent urination is one of the most common pregnancy symptoms and it starts around six weeks into the first trimester. Although frequent urination is one of the most irritating pregnancy symptoms, it does not harm you or your baby. In fact, it is the best way to flush out toxins from the body. As long as there are no other symptoms, frequent urination during pregnancy is completely normal.
This discomfort is relieved during the second trimester when the uterus grows into your abdominal cavity. However, the relief is not very long. However, most women say that they have to urinate more frequently towards the end of pregnancy, i.e. around the 35th week of pregnancy.
(Read more - Color Of Urine In Early Pregnancy)