I am expericing heartburn, white discharge, stomach pains, dizziness, and a week late. I took two hpt and both are neg. Pregnant? Something else?

Something else. You can likely rely that you are not pregnant with two negative tests. Being one week late means you probably did not ovulate on time. If you do not ovulate on time you may have an ovarian cyst that causes pain. That cyst will produce estrogen that leads to increased discharge. If you do not get a cycle soon i would recommend that you see your provider.