Sorry ahead of time if I posted this in the wrong area, but I keep having repeated dreams.
1st dream that repeats: I keep getting back with my ex wife.
2nd dream that repeats: I keep getting crushed under things and can't breath. Last time it was a train.
Thanks for any ideas, I'm lost and will take it to God, but he doesn't always answer.
Sleep apnea causes people to stop breathing while sleeping and happens repeatedly through the night, you might want to get sleep tested. If you're down wind from a big wild fire, the toxins and particulates in the air could also make your breathing more labored. Sometimes the things that we physically experience while sleeping can intrude into our dreams and change them, but that isn't typical because our physiology has a mechanism to block sensory data while sleeping.
While in tech school in the service I had a dream about my old dog climbing up on my bed and lying on top of me, making it difficult to move or breathe. In my dream my dog was my dog, but something else seemed to control it. I wasn't born again yet, but the experience seemed like a form of demonic oppression.
I've also heard of people suffering from "night terrors" waking up, but not completely, so that they are aware of being awake, but not able to move because the full control of motor functions suppressed during sleep hasn't been restored yet.
Dreams are not necessarily just random subconscious creations, but are often the minds subconscious efforts to resolve problems from waking life. In college I occasionally woke up with the solution to a "homework " problem that I was struggling with while waking. The Lord may be moving you to resolve unresolved issues with your former wife. His way is forgiveness, mercy, and relational reconciliation, so that wouldn't be unusual.
Do these dreams occur together? It could be that external influences are trying to prevent you from reconciliation to your former wife and that your subconscious mind is recognizing something that you can't grasp while awake.
In my experience with my own failed marriage, outside influences played a big part in the outcome and my consideration of those influences allowed me to forgive and be reconciled to my X. Don't underestimate the importance as a Christian, of being reconciled to those who have offended you and sinned against you. We can't be reconciled to those who want no part of reconciliation, but the bond of marriage is the most significant in our lives after the relationship that it is supposed to represent, our relationship with God.