I woke up in the middle of the night...

Last night I woke up due to a disturbance outside , but I noticed that I had hot flashes as well. My body was very warm and sweat was forming, but not in a way it was drenching my shirt. I felt a little nauseous as well. I do have Nexplanon and I have been taking a lot of Motrin because my doctor had prescribed taking 800mg a day. I dont know if that's a symptom from Motrin or what. I've never had hot flashes from Nexplanon previously. I've had it for 2 months now. Although my Nexplanon experience hasn't been the greatest because I've been bleeding a lot lately. Opinions / advice?