Suggest Remedy For Frequent Urination

I ve been urinating frequently for the past 3 days. I also have chest pain due to anxiety (I think) and palpitations. For the past month and a half, I ve had some swelling in my legs, particulary the left one, mainly when standing for long periods. I was diagnosed with fibrymyalgia several years ago. What could be causing the frequent urination. I m a 45 year old female. I weigh approximately 165 and I m 5 5 .