Fearing about health issues. 110/90!

My husband was 30 years. weight 49kgs. He is doing ph.d. He unable to sleep properly and so many things is running in his mind about health issues. From few days onwards, In a day several times he feel following symtoms: Also these symptoms each time lasting after 30 to 1 hour duration 1. He feeling light headedness, his head feels heavy, head ache is coming fore head for that 30 min. duration 2. Pain is coming around one eye some times right and some times left eye. 3. vomit feeling, some times water vomit is coming without food 4. He also feel like my back of neck is pain some times left side of spinal and some times right side of the spinal 5. From 4 weeks onwards my eye sight also some what difference but not blurry.. 6. My bp is coming as 115/100, 120/80, 110/90