I was in disquietude when i realized that my house was unlocked when i know that I locked it before i left.

Wishy-washy. Intimidation. Disquietude.

I think you mean chagrin

From Merriam-Webster:

disquietude or distress of mind caused by humiliation, disappointment, or failure

Synonyms for angsty include anxiety and apprehensive. Other synonyms are nervousness, uneasiness, disquietude, distress, foreboding, fretfulness, jittery, and misgiving.

(Of a person) anxious or apprehensive; (of a condition) precarious or uncomfortable.