My baby got her 4 month vaccines last Thursday and she's been extra sleepy ever since. She's sometimes only awake for 25-30 minutes before she needs another nap, and she also just seems like she can't sleep enough. Even after she wakes up from her nap, she is cranky and could probably use more sleep.

Another thing I noticed is she doesn't seem as happy/bubbly. She normally is SO happy...always smiling at everything. Lately she's been more serious though. It could very well be because she's going through a leap and she's very focused/interested in everything going on around her...but could it also be due to the vaccines?

Just wondering if any of this is cause for concern.