Alex,
Trama, pain, etc is recorded in our subconscious mind. It is stored there but, is just underneath our consciousness. I was and still is a protection device that was created in man in the times before communication (speech). Since we do not have instincts like animals, man has to rely of this mechanism to teach him not to repeat former mistakes over and over again. Like when you first touched something hot. Your subconscious will kick in when you start to touch something hot again. Maybe remember pain in your fingers, etc. will stop you before you make the same mistake a second time.
The birth experience is a tramatic and painful experience for the baby too. It is stored in the subconscious along with everything else. Finding it requires time and patience. Freud admited, that one could not experience birth because of the trama but, later it was discovered with the state of reverie and a partner one could withdraw information out of the subconscious.
Reverie is not hypnosis but, actually the reverse of it. Reverie is a relaxed state that makes you more aware of everything around you and inside you more than when you are in your normal state of consciousness. That is why one can see inside themselves but, a partner is needed to ask the right questions.
Once your eyes are closed and you have relaxed your thoughts, (you can do this sitting or laying down), your partner can asked you things like how do you feel for example. You tell them the first thing that pops into your mind. The partner lets you flow your answers until you are finished and then ask you another question from the list of answer that you gave on the last one.
The way I found my birth experience was when I was in reverie and my partner asked me to experience my best sexual experience. Once that was over, she asked me what was the first number to come to mind. The number was 2. She then as was the birth or prebirth. I said "prebirth". She asked was that 2 hours, 2 minutes, 2 seconds! I said 2 minutes and the birth experience began for me.
There is no pain in any of the experiences but, your senses will be heightened as well as your emotions.
Once the birth experience was complete she ask me again what number comes to mind. I told her 3. She asked was the birth or prebirth? I said "prebirth". She asked was it 3 seconds, 3 minutes, 3 hours, 3 days, 3 weeks, 3 months, 3 years! I said 3 years, and that is where the past life kicked in that I had experienced!
Ernest