hard time falling asleep?

Jenna
My lo will be 12 weeks on Friday and for about a week now he constantly wakes up in the middle of the night. Not cuz he's hungry but just because. I can't figure out what's going on. I put the binky back in his mouth and he falls asleep and then 10 minutes later the binky falls out and he's crying. I just started to stop swaddling him too so not sure if that has anything to do with it? Anyone else going thru this or have suggestions? One tired mama over here! So tired I let him sleep in our bed last night and he actually slept for a long time.. but I'd really rather he slept in his crib