Raynaud's Treatment? (hand changing color from eating certain things)

i'm not sure if i have raynaud's or not, but i have this weird condition where sometimes my left arm will feel like tingling down it, and the circulation gets messed up in it and the color changes in my hand. it definetely is related to what i'm eating. for example, sometimes it will happen after i drink tap water. today it happened after i ate a bunch and took 4 hcl stomach acid tablets with it. i'm worried the stomach acid did something bad because this hasn't happened to me in a while. this started happening after i "crashed" from propecia. initially, i figured out it was from sulfites and sulfates and some kind of MSG sensitivity. i did eat some beans from a can.. although like i said this hasn't happened in a while. here's a pic to show you what i mean.. and a shadow is partially in there, but there really is a color difference.

can anyone help me to figure out what the hell this is? i'm getting so life frustrated from this fucking propecia pill that i haven't even taken for 4 years.

So I managed to get the color back by doing vitamin c, iodine, and colostrum. I think colostrum helped the most.. But this is very frustrating and a clue towards something that is wrong.

Here's two things I know, one the stomach acid I take has improved my digestion a lot I used to feel weak and tired and fatigued after eating also had I undigested food in my stool. So I had low stomach acid, this indicates poor thyroid? Could this be a part of it?

If anyone cud help me in anyway point towards what this is, regarding either hand color change or low stomach acid involve, it would be greatly appreciated.