Frequent need to go to the bathroom is not necessarily a sign of pregnancy. Generally, frequent urination is a symptom of early pregnancy and is caused by the pressure on the bladder as the uterus increases in size. This symptom appears only after the uterus has enlarged, probably after 6-7 weeks of pregnancy. If you are not sure if you are pregnant, it is generally possible that frequent urination is caused by a urinary tract infection or when you have kidney stones, so you should visit a urologist. If you don’t have your period for longer than it should be, you should take a pregnancy test to see if you are pregnant. If it is a case where your period has started to stop and you have stopped menstruating for about 10-20 days, it is possible that pregnancy is causing the symptoms of frequent urination. So, you have to go to the hospital for a test to find out which is the case.