Male 22. sat down blood pressure 120/71 hr 71 stood up it immediately went to 145/75 hr 95 then a few minutes after went to 118/76 hr 98. pots? serious?

Not POT: In pots, your blood pressure falls when you stand up. It's normal for your blood pressure to go up when you stand. For the most accurate results, wait 2 minutes after changing positions before checking your bp. What you have reported here is not serious, though with all those procedures you have been through, i suspect there is more to the story.