My wife and i (both women) are experiencing pain similar to a uti, though she saw a dr. negative test. no sex in months (pregnancy). no stds. idea?

Many possibilities: But one thing which should be excluded is non-gonococcal urethritis, most commonly due to chlamydia, but with other organisms possible.

Bladder irritants: If neither of you have a positive urinalysis and your wife had a "negative test", there could be a dietary irritant to the bladder at fault. If you both ingested the same foods recently, the answer may lie in your diet. You can find a list on the internet. Common foods are acidic foods such as tomatoes, citrus, cranberries, coffee, chocolate, tea, artificial sweeteners, spicy foods.