2 Month Vaccines....what's normal?

Today was my baby girls first round of vaccines. She got them around 11 am. It is now 1:40am and she has slept all day with about 3 small urine diapers. She is breastfeeding without fuss, but not eating as much as usual and falling asleep at the breast. she woke up long enough to remove her band-aids and to give her a warm bath. After the bath, she ate a little more and went back to sleep. I'm having to wake her to eat when usually she wakes on her own to eat. She's not running fever. I'm a FTM, so I'm very worried. Is this normal?