Hello dear,
The symptoms as mentioned in your post can be due to:
1. Inadequate hydration status & electrolyte balance of the body
2. Dietary deficiency of certain nutrients like Iron, Vitamin B 12, 
Folic acid, etc. which helps in blood formation & 
nerve conduction.
3. Any infection in the Gastrointestinal tract: presence of green watery stool with mucous is suggestive of that.
So, kindly 
consult a Gastroenterologist & get a proper clinical examination done.
Investigations like stool microscopy & culture, 
Ultrasound scan of abdomen will be helpful.
If any infective cause is reported, then it has to be subsequently managed with antibiotics.
Wishing you a Good Health.
Please let me know if I need to clarify further.
Thanks & take care.