It’s super normal to feel panicky after ingesting THC. It’s one of those negative counter affects of medical marijuana. You had a bad experience this time, so next time, ensure you are taking in less THC, are well fed, hydrated, and relaxed a bit. I would recommend perhaps starting with a different form of THC intake such as smoking, vaping, or even a tincture while you begin because the highs are more predictable and measurable; plus they don’t last as long so you don’t need to worry about being caught in a bad experience for hours you know? As someone with anxiety disorders and panic disorder, dizziness and anxiety together usually just indicate a heightened anxiety or a panic attack