I feel nauseous everyday.its not anxiety,got blood tests and they don't know what's wrong.i don't know if it's menstrual because i don't get cramps.:(?

Nausea: Nausea can be caused by central (brain-related) issues, medications (routine prescriptions as well as heavy marijuana use), gastrointestinal dysfunction, gynecological dysfunction, metabolic disturbances (blood sugar), hormonal imbalances (menstrual, thyroid and adrenal) and infection. Hope this gives you a road map of potential considerations in addition to what has already been investigated.