Frequent urination; burning & itching. Constant headache. Discharge. Foul unregular smell. Sudden cramps. Blood in urine? Husband might be cheating

Here are some ... Regardless of hubby's cheating, you need to be checked out if you got UTI or vaginitis - bacterial or STD-related or if you can empty bladder or hold urine. If STD is concerned, treat it - your husband also needs to be treated (empirically) and followed after an assessment if possible. So, go to see your gyn-doc for evaluation / care. Oh! Don't forget: Healthy lifestyle is key to longevity.