Pulsing sensation in upper left abdomen?

It looks like most of your troubles start at night when you lie down , that’s when the acid escapes from your stomach . What I have done is get a couple of blocks about 5 inches high and put them under the end of my bed frame where my head is , so I ended up sleeping on a slant with my head higher than my stomach . That will keep the acid in your stomach because gravity will keep it there . It helped me a lot .

keep using apple cider vinegar and take probiotics .

 I started to sleep on the recliner 10 years ago. I start sleeping sitting up and as the night progresses I end up laying down. 

 What has really helped me the most is dieting. Eating less and avoiding sugar as much as possible.  I take a appetite suppressant that helps me to stop  snacking at night.

It would be a shame for you to continue suffering like this when you can strengthen you esophageal sphincter and get relief. I no longer have acid reflux and it has changed my life. 

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It can likewise be a standout amongst the most hard to analyze on the grounds that there are such huge numbers of regions in the stomach area from which the agony could be originating from. Hence, I urge you to visit your essential care doctor who can play out a physical examination and get some information about your manifestations. That being stated, torment in the upper stomach area which goes toward the back can at times be ascribed to pancreatitis, a condition whereby the pancreas winds up excited. There can be various reasons for this irritation which can incorporate gallstones, liquor utilize, injury to the zone, and certain pharmaceuticals. Ulcers in the stomach can likewise cause stomach torment. Ulcers situated in the stomach commonly cause torment directly after suppers, while torment from ulcers in the digestive organs is normally diminished by eating. Side effects from ulcers can run from swelling and sickness to a chewing or consuming sensation. Aggravation of the stomach can likewise cause comparative manifestations and may even be caused by a specific microscopic organisms which can be dealt with. These are only a couple of various potential foundations for your stomach torment. If it's not too much trouble visit your specialist who can better enable you to deal with this torment.

If the symptoms do not go away. Go to the doctor and do your research. Take a break from apple cider vinegar and start drinking more water. Excess apple vinegar is not good for the body. Maybe you've acidified him too much? Take a few days break and assess your well-being