Sooo i need advice?

I have been having these really bad intrusive thoughts? Thats the best way to describe them?
Ive always had them but they are getting really bad recently in a certain aspect of “theres something out there waiting for you” after showering or after going to the toilet, getting out of my bed at night without lighting up the whole part of where im going is impossible. I know there isn’t anything but I can’t help but be scared that there is, I was trapped for 30 minutes one night because I was literally terrified someone or something was outside my bathroom. I thought i was going to faint just by opening the door.

During the day its fine. What i need advice on is how do I deal with this without going to see someone? We dont have the money at the moment plus I know my parents are stressed about other things, i don’t want to speak to them about it. And my brother isnt really available for that kind of thing, since he has some issues, he isnt really the best emotionally. My other siblings, since we have a large age gap and i didnt see them often growing up, we dont really have a relationship. I dont really have any friends I could speak to about it either because i dont want them to get sick of me and I dont want to put this burden onto other people.