I got Moderna. Felt crappy for about 12 hours after the first dose and injections site was very sore for a few days. About 8 hours after the second dose, I ran a fever and was achy for about 18 hours. Injection site pain was pretty bad and I barely slept the night after the second dose.
Since then, everything is back to normal except for one side effect. I have been sleeping much better than I have in a while. I have had a few bouts of insomnia over the past year where I get up after a few hours of sleep and cannot get back to sleep for a few hours. That has stopped completely. I think being fully vaccinated and having my family (save and except for an anti-vaxxers sister in law) being fully vaccinated and seeing things slowly get back to normal has taken a huge weight off my shoulders.
If you are on the fence about the vaccine, do not underestimate the benefit of knowing that you are protected from getting COVID and knowing that you have done your part to help get things back to normal.