I was perfectly healthy until diagnosed with panic attacks, hpylori and now stomach pain 18mos ago. most notable blood results show significantly low iron, low testosterone (im female), low vit d. slightly high tsh. im trying to find root cause?

There may be more than one "root" cause. One seems to be nutritional deficiency and the second one is thyroid insufficiency. You appear to have seen a doctor and should with her/him to sort out the issues and corrective medications. You may take oral iron, multivitamins and 2000 units of vitamin D3 to address nutritional deficiencies. Wish you good health!