2 month old first set of shots


Baby got his shots 3 days ago and hes been really not wanting to eat at all. Yesterday he went 4 hrs without eating and even after I gave him the boob it wasnt a full feeding. Hes been eating for maube 5 min on one side and then is done. After i put him back on the boob he'll trick me and get a full mouth full and spit it out. Is that normal for babies after they have shots?