not sleeping good anymore 😣

Meagan • Pregnant with my second baby. I have an 8 year old son. We are so excited for this new addition coming August 2016 😍
My 3 month old son was sleeping so well. From 9:30 pm to about 4 am. This whole week he's been waking up about 2 times a night sometimes 3 and has a hard time falling asleep. Anyone else having a similar problem? I'm wondering if he's teething 🤔