Frequent urination & pressure in abdomen, cramps, constant headaches, fatigue, & white discharge. just had check up everything was ok. what could it be?

See answer : Your multitude of symptoms cannot likely be explained by just one diagnosis. Frequent urination associated with bladder or pelvic pain suggestive of either a UTI or interstitial cystitis. A urine culture can help differentiate. Vaginal discharge a separate problem with a variety of causes and need to rule out a treatable vaginitis (e.g. Yeast). Similarly, headache and fatigue have many causes.

Many causes can be.: Since you had a "check up" some most common conditions are likely were excluded with the "ok" result. The question is- how extensive was the evaluation? Frequest urination and abdominal problems could be related to urological disease, while the headache and fatigue is very unlikely related to it. You may want to have some further evaluation by a gyn, and/or urology.