Hi I've Been Experiencing Some Symptoms And Not Sure Whether

Hi I've been experiencing some symptoms and not sure whether or not I should take a pregnancy test? I've been feeling just absolutely exhausted the last few days like I always need to take a nap. If I even kick back in a chair or something that makes it automatic. I also sit at a desk for the majority of the day and have been urinating almost every hour, like clockwork. I also have had a headache the last several days, along with feeling dizzy and some pain nearing my lower back. I had some strange vaginal discharge a few days ago, too. It was white and really wet. I also have been diagnosed with amenorrhea, which has lasted almost 12 months since going off birth control.