My son is a loving kind child. But this past week he has been fussy, crying, upset and wanting to nurse all the time. I had masitis this past week and he would get upset if I couldn't nurse him on the breast that was infected. My OB told me I shouldn't nurse him on that side. However, it's started to clear up but he is so fussy. Could he be going thru a growth spurt or could it be because of the antibotics? I just don't know what to do with him. I want to make it better, but I just don't know how. Any suggestions?