HI
Thanks for posting your query.
BP raises due to many reasons . One of the common reason is any kind of Physical or mental stress. The same happen in your case . Due to the stress of gut and body shivering and
nausea , your BP shoot high. So nothing to worry about your BP as it was a transient elevation.
Now what caused that kind of shivering has to be evaluated . It can be due to
Indigestion ,
food allergy or Infection. If this was the first time that happened then did you had any unusual food that night ? If yes then the chances of food allergy or food
poisoning is high . Kindly let me know .
Was there any alteration in your bowel movements?
Did you had any fever or vomiting?
Kindly let me know these details .
Also I advise you to get
Ultrasound Abdomen Pelvis , LFT and serum Lipase test done and revert back with reports.
Hope this information was useful to you.
Any clarification feel free to ask.