Waking up

Has anyone else went through a day where you feel like you’re moving on and you may not think about them as much especially when it’s night time or before bed. I had this last night and I went to bed sort of peacefully, better than usual but I woke this morning with my mind just racing with thoughts about them, the breakup, the memories, the what ifs, the over thinking, etc. keep in mind I also got broken up with and it’s been 2 months and NC, after a 3 year relationship so its still fresh. Does anyone else experience this?