Can someone explain what im feeling? im terrified?

a few months ago i started feeling like i was being watched. not all the time, just at nite after the sun had gona down, and only when i am alone. i am usually intuitive when it comes to knowing if someone is watching me or following me, and this is stronger then any feeling ive ever had. its like someone is standing in front of me and i cant see them. its kept me awake for hours every day and i end up having to sleep during the day sometime. tonight was the worst, i was listening to music to take my mind of it, and once i felt calm enough to go to sleep i turned it off and relaxed. when i had almost fell asleep, i felt pressure on my bed rite next to my hand. i woke up and nothing was there, and then the pressure went away. it felt like a puppy was resting its front paws on my bed, almost lighter and in one spot. i was so scared i culdnt move. i dont know if ive developed a fear of the dark, or being alone, but it only happens at night in the dark when im alone. its getting worse and im scared and i want to know if i should be telling someone or doing something. please any help?