4dp3dp...Uterine stretching?

Could it be?? I woke up like twice last night feeling like the insides of my uterus were pulling away from something...it was kind of scary and it hurt. But I was so tired that I just fell back to sleep with delusional thoughts that my two embies were tearing away from their snuggly place. What I have to say is I do remember this very clearly from my first pregnancy. Soooo, we'll seeeee. No other symptoms to report, whatsoever. I am so excited for a restful and relaxing weekend. Last weekend was slightly crazy so this weekend we are chilling out. Tomorrow we are taking Lil' to York's Wild Animal Kingdom. She officially turns 2 tomorrow, June 14th. My little squirt is growing up like a weed.