What Causes Constant Feeling Of Moving In Slow Motion?

I am an 18 year old white female and I feel like I am in a permanent trip. It’s like everything is moving in slow motion, but at the same time all feelings of touch are intensified. It is very hard to put into words because it is such a complex series of feelings. I have never done any drugs whatsoever in my entire life. When my older sister was 13 (she is now 27), she had a cavernoma in the right posterior. She has a right parietal craniotomy for resection of a neoplasm. Just this year my other sister (age 30) was diagnosed with a benign tumor in her pituitary gland. I have an appointment with a neurologist on Tuesday, but I wanted to get a brief idea before hand as to what I may be dealing with. Please help!