If this feels really disturbing and your daily life does not seem to be contributing there is a treatment known as Image Rehearsal Therapy (IRT) for nightmares that can be helpful to defuse the fear. Google it and therapists in your area to see if anyone can offer it. IRT can be done online.

Recently I've been going through same routine of waking up early morning, getting ready, then college and classes, assignment etc... and some personal issues with mom but the nightmares are honestly strange it's like someone I know is torturing, scaring me or someone is trying to create a negative impact around me. I feel strange and scared...

Leena K., it’s really important to look at what is happening in your waking life that may underlie these changes in your nightmare intensity. Nightmares almost always emerge when we aren’t dealing with, avoiding or maybe even being unaware of strong emotional issues that are arising during our waking life. If we don’t resolve waking issues our mind/brain tries to manage them as best it can during REM (or dream) sleep. Does any of this make sense to you in terms of your daily life?