Welcome to My Nightmare

I don't usually have nightmares very often, but there was once where i recall i was home with my brothers and my parents went out. The weather seemed to be quite spooky as well because it was extremely foggy and there was drizzle outside, but cold weather is my favorite except for this time around. So i was in my room watching t.v and all of a sudden i saw a man in a long coat and a hat that covered his face, my heart stopped as i recall when this figure appeared right outside my window. I felt like running to my brothers and telling them but i couldn't, all i did was stare at him in the eye and he stood silently for what seemed like hours. After i was able to control my body i began to slowly get up from the bed and approach the door but i recall he started screaming loud and i ran to my brothers. Once i told them what had happened they laughed, i was frightened as can be and felt like crying but then someone knocked on the front door and as i went to answer it, it turns out it was the same man only this time he said to me, "I'm here for you." i ran away and hid under my brother's bed, before hadn i tried waking up but i couldn't, and he entered the room but it was as if they could not see this complete stranger chasing after me, my heart was racing and after he inspected the room, the man left. I thought i was safe but then i felt someone pull me from under the bed and i appeared in a chair with spiders all over me, nothing more in this world that i hate other than spiders! Soon he was laughing and placed me in a tub which seemed endless and the water was extremely dark blue, i recall seeing sharks and ever since i saw the movie Jaws when i was about 8 years old i fear dark waters. So the shark began to swim towards me and as i saw his jaw open wide in front of my face i tried screaming, of course i forgot i was underwater and i was so scared about being eaten alive that i woke up screaming according to my mom. i clearly remember her telling me that it was 2 am and i explained to her my horrible dream to which she only answered, "oh that's nice, go back to sleep" I had the most serious "really?!" face after hearing her response.