Can Spirits Communicate With Us Through Dreams?

I have recently posted stories about me thinking I have a twin brother. I have found out the reason I think this is because I am a womb twin survivor. Which means that my twin died while we were in our moms stomach. As I found this out, I grieved for him.

His spirit is communicating with me through my dreams. He has showed up and warmed me about things. But my dreams this past year have been about the same place: I'm with or alone in a harbor/ bridge area at night or a stormy night. I don't know what he is trying to say to me. In a few days, I will be going to new Orleans though with a synod to help the damage down there. I know that it is by an ocean and am wondering if he's trying to warn me about it. What does it mean to dream about a place every night and you have never seen it or been there?

Also, I have had a dream about a girl I know, who has been hurt badly and in my dream, I have troubles trying to get to her and help her. I end up finding het but she is badly depressed. She eventually calmed down and thanked me. Could this actually happen? My dreams are very realistic and always sad/ scary.

Can spirits communicate with us through dreams? I am worried that something bad will be happening soon. This girl is a friend (kind of). She has been through a lot. Someone she cared about died 2 years ago. Could he be communicating with me because his spirit can sense that I care?

I could be over thinking all of this. I tend to over think a lot. I would love to have and older or more experienced person help me out with this. Thank you for reading!