Loose stools from 3 days in morning.

Dear Docs, I am getting loose stools and chilling cold feeling sleep also disturbed in night with goosebumps. I was taking vertin 16 tab from 3 days also for cervical spondylitis for dizziness and pain on neck and back. Weakness when standing 2-3 second dizziness heart beat fast.Although no pain n dizzy today but feeling like vomiting now little discomfort stomach. Earlier also this thing happens one weak before then after taking satrogyl o and ors next day situation became better. Done full body check all tests good except vit D 35 and vit B12 540(took injection 2 times) No thyroid No diab mind running always because of cervical issues..mind most of the times running thinking is this because of some infection or vertin or anything else whynit is not being treated anf coming again n again i am confused situation is becoming like this taking meds then issue not taking meds then issue..right now..