I don't think these symptoms refers to any particular health diseases. However, it indicates that you are going through some kind of pressure/tension that is burried under your soul. Whatever you do your mind prioritize those thoughts over any thing and as a result you can't concetrate your mind, talking different thing

The soultion is to talk your problem with others. They might not able to provide the exact solution however, you feel good when u share these things others. That's what i do almost all the time. you will be fine very soon. Just relax.