Vaccine Side Effects? # As of last Thursday, I received my second dose of the Covid-19 vaccine. I basically couldn’t raise up my arm for 3 days, and have been taking Advil to ease some of the pain. I honestly regret not taking it from the first night since I woke up multiple times while I was tossing and turning. However, I also ended up getting fever blisters on my lips without actually getting a fever, so I’m not sure if that’s a coincidence, or it is something that people have just a tiny chance of getting.