Frequent Urination and I do mean frequent

[xmelax35]

What could cause frequent urination or the urge to urinate constantly?  I am a 36 year old women.  I will go ahead and tell you I do not have a UTI, I was already checked for that and that is the only thing the ER checked and sent me home.  They did a urine specimen on me and said no UTI and sent me home.  It is not do to my medications either.  There is one med that causes this with me but I am not taking it, I was told awhile ago to stop taking it, which was Oxaprozin, and in which I did stop taking it.  I do have some medical issues, like chiari malformation, tahcycardia and a very small pituatary tumor or they say possible rathes cleft cyst but it is very small like 5mm.  Otherwise how can I have this, I get done urinating and have to go again and again and again.  It does not stop.  This just started up a few days ago and I do not need this on top of my pain and other symptoms.   I have not started any new medications.  The ones I am taking never did this to me and I have been on them for a long time.

Any advice would be appreciated.
Thanks

[xmelax35]

Thanks and I will keep you posted.  I go to the doctor in a week, but I may go to the ER, since my doctor won't believe me, but if my fiance went w/ me he could testify to the fact that it is like that.  I can't stand it.  I will find someone willing to believe me.

[Dr. Kokil Mathur]

Hi
Thanks for writing to the forum!
Since you have pituitary tumor I would suggest you get yourself investigated for diabetes insipidus. Also diabetes mellitus is another cause for frequent urination. Get your blood sugar checked. Urge incontinence and small bladder are other possibilities that should be looked at.
You need a comprehensive investigation by an urologist considering your medical history. It is difficult to comment beyond this at this stage. Please let me know if there is any thing else and do keep me posted. Take care!