Got my 3rd dose of Pfizer Friday. Like you my second dose made me feel groggy. Felt like I had all the energy sapped out of me for a day or so and just wanted to sleep.

My third dose I haven’t had any of that. Have felt perfectly fine to be honest. The only side effect I’ve had is a slight pain in my lymph node underneath my armpit (which is supposedly not unusual with any vaccine). It started forming yesterday but is already starting to feel better today. Some people have reported swelling the size of a golf ball, but mine is just barely swollen and just kind of feels like bruise if I move it or touch it. At worst it’s mildly annoying.