I had a dream where I was fishing in my lake. As I was fishing I saw a bomber fly over my lake and drop an atomic bomb. I knew that I couldn’t just sit there and watch it explode, so I stepped back a little bit, ran forward, and tried to do a giant jump. I jumped very high and very far. I tried to catch the bomb but it blew up just above my head. It pushed me down with such force that I hit the water of my lake and kept going. I was pushed to the bottom of the lake, and the water was crystal clear.
When I woke up, I felt like someone was pressing me into my bed, it felt like a giant, extremely heavy, lead blanket was pressing me into my bed.
Any ideas why this happened? 
IMO it was probably the SP getting through into your dream and then lasting for a short time after you woke 
Yeah, it was a mental/emotional response lingering after the dream. The same thing happens to me when I write short stories. The personalities and emotions of the story characters linger in my mind for a while until I start thinking about other activities.