Been there done, that. For a while, due to distance Mr. 1228 and I were separated for 3 and 4.5 months at a time
It is not irrational to feel that way
Take a nice long relaxing bath before seeing him. Relax, breathe. Let him know that you are VERY happy to see him. Take it slow if needed.
Hope the reunion is a blast and hope you have a big old smile on your face!