Hope you perk up quick….and you probably will. My Dad had similar results to what you mentioned when he got his second shot. After a good sleep, he said he felt great.
I did the J&J shot. My wife works for them so I guess we should represent lol. Truth is, I had no plans of getting the shot, I am pretty sure I had Covid last February before it became a pandemic but I guess a booster can’t hurt and my wife made it easy, go here (locally) at X time, drink a coffee for 15 minutes after the shot, so I did.