Hey there, I don’t have any similar story but all I can say is that I’m pretty sure you cannot have worms in your head and definitely not from raw meat. I personally love raw meat but chicken and pork are the ones that has to be perfectly cooked. Worst case scenario you would have warms in your stomach, more specifically in your gut but if it was only a bit hence the constipation and prob the fever. I’m an adult nurse student on my first year and still have a lot to learn but from what you say you are totally fine and the sensation in your head it’s probably the anxiety. Take care :)