Welcome Melle.

I am glad you found PC and decided to reach out. That is a great first step. Loneliness and feeling misunderstood are so hard to deal with.
Please don't minimize your problems. There are no big or small problems only ones that are causing you so much distress. This is a good place to find out what you would like to say to those you care about in finding support from them. I think you are right sometimes writing things down helps clarify them. I know it does for me.
Know that there are people here that do care and understand many of your feelings. Please feel free to PM me anytime if you want someone to talk to. You are not alone.
Please take care and again welcome.