Ive been having headaches during the week when i work. im not drinking as much water as im supposed to and barely getting sleep. which do i need more of to help with my headaches?

Investigate headache: Causes of headache include tension, exhaustion/sleep deprivation, dehydration, high blood pressure, low blood sugar, physical brain disease and others. If you can relate your headache to a specific cause, then start by addressing that cause first and see how that goes

OTC meds, lifestyle: You did a good job of identifying two possible causes of your headaches, so the most important thing is to make additional there. While any kind of over the counter pain relievers may reduce headache, they’re all associated with side effects and may just put the equivalent of a Band-Aide over a problem without effectively treating its root cause.