These things either are or are not happening to you. You are not paranoid if the things that you are claiming to be true are in fact true.
You said that you have recorded the woman you suspect to be harassing you climbing in and out of your bedroom window with the help of your ex. If you have that video evidence, then you should give it to the police. It would be proof of your claims.
You wrote that you have no one that you can trust but that is no more true for you than for anyone else. Some people are trustworthy and some people are not. You should be able to trust the police, a minister and a therapist. That’s true for you and everyone else. Of course there are exceptions, but generally speaking you can trust those people. Their level of trustworthiness is the same for you as for anyone else.
Try trusting a therapist. They will help you to sort out your situation. They can be the calm, cool, objective listener. They can offer advice. They can help you to feel better.
It is frightening to have someone harassing you. You would benefit from having a trusted friend or a counselor to help you through this difficult time in your life. Counseling could help to relieve the stress associated with these troubling situations and to learn how to best protect yourself. You should consider it. Please take care.
Dr. Kristina Randle