Has anyone ever experienced a feeling of like….well I don’t really know how to explain it but here goes..

This morning I was laying down on some pillows snacking and out of nowhere I felt that feeling of when you feel your blood rush down (like when you get scared and your blood rushes down..don’t know if I am explaining that right). I sat up real quick and I felt like I was about to pass out. I started to feel panicky and anxiety. I freaked out and I went to go get some chocolate and it made me feel better. Mind you, I don’t have diabetes but now I’m wondering if I do? I asked my bf to go buy me a kit at rite aid so I can test my blood sugar but I’m scared of checking. I’m fine now. I feel great. What are your thoughts? Am I just overthinking it?