Type 2 and New to Trulicity ?... once-a-week shot replaces daily Victoza and Byetta shots

Hi. First night on Trulicity. Slight headache and that " I can feel it run through my veins feeling" but otherwise ok… Already on metformin ER. Dr thought weight loss would help my type 2 because my insulin production is ok. Will keep posting. Last a1c 6.3 I have been as high as 8.1.