Hello and welcome to the forum.
I glad to see that rather than getting discouraged and quitting, that you are seeking out more information. Staying curious; it keeps discouragement and frustration at bay and the journey so much more interesting
That is interesting, but not uncommon, especially when first starting out and if you are doing the practice via a script and not with a teacher who has had personal results in the technique. Would you link to the script that you are using so we have a better idea of what you are following?
My first questions are about your breath and your body position. Are you do a pranayama (breathing) practice or just breathing as you normally do? Have you notice any changes in your breath while doing this practice? Are you sitting or lying supine? If it is not being acted against by other forces, lying down will affect the parasympathetic nervous system: lowering blood pressure and body temperature, slowing rate of breath.
You haven’t said if you were new to mediation or relaxation practices, so I am inferring this through your post. When starting out, many people need techniques to work with what our minds do when we give ourselves space and silence. It can be anxiety provoking, or painful, or frightening and blood pressure and breathing may be provoked as well. Again, stay open and curious; I usually have a combination of these and more in each of my sittings In sitting we are making space for these influences to come up–this is the only way to affect them. And it is good to have techniques and tools available to us. These can be anything: a soft blanket, your script from AYA, a timer that will keep the time for us allowing us to let that go, a mantra, an affirmation, a prayer… I like to offer all of my clients a Yoga Nidra practice because it focuses certain aspects of the mind while allowing other aspects to rest. It also takes our attention systematically through the body, allowing our whole bodies to move into deeper relaxation. Yoga Nidra is not about effort, but simple observation of your body and mind. I use both Swami Muktidharma leading Satyananda’s Yoga Nidra and Richard Miller’s Yoga Nidra and iRest. You may like Yoga Nidra too.
I am looking forward to hearing more from you.
Kind regards,