i have had my shots and i had the moderna. the first shot was the last week in december and the follow up one month later. almost everyone in my family has been vaccinated with no ill effects.
i don't take much stock in anyone who tries to tell you how most people react. i have talked to at least 100 people in depth about their reaction and have heard it all. some feel bad right away, some the next morning and some 24 -36 hours later. some never at all. some run a low grade fever for a few hours, some for a day or 2 and some not at all. some have no effect on the first shot, some on both, some no effect on the second and some no effect at all.
my wife, my mother, my oldest and youngest son and i have all had moderna and every one of us reacted different.
my wife (55)ran a low grade fever and felt sick for about 6 hours the day after both.
my mom (91) went home and slept for about 24 hours after each one but never was sick.
my son (26) felt crappy for for about 36 hours on both.
my son (21) felt run down but has only had his first shot so far.
i (55) was tired and slept all day, 2 days after each one.
my mom was not known to have covid but the rest of us did. my oldest son was quite sick for about 5 days. my wife showed very few symptoms. mostly sore throat and sinus pressure. my youngest son and i have antibodies but don't know exactly when we had it.
what am i trying to say? everyone and i mean everyone reacts different. for me the deciding factor is this. i know people who died from covid. i know people who were very ill from covid. i know people who still have not fully recovered from covid and more than likely never will. i bet most of us do. i don't know of anyone who has had serious, long lasting side effect from the any of the vaccines.
is it 100% safe or effective? nope, but what is? life is full of choices and chances and at the end of the day you have to make choices and take chances or you don't have much of life.
only you can decide what is best for you but i am happy with choices we have made.