What could i be experiencing?

Starting around 2 weeks ago February 7th , when i was at work , i got a sudden urge twice , kind of like a feeling of when i stood i kind of had to compose myself for a second and felt a strong tingling feeling throughout my whole body twice.

Since then I have been lightheaded on and off throughout the day , i’ll get that tingly feeling even if i’m just sitting down or laying down or anything.

I’ve been to the doctors twice , was told to just keep hydrated and my blood pressure was good both times , slightly a little high and was told that it may be anxiety (I do struggle with health anxiety sometimes, i tend to overthink it. I was only prescribed Hydroxyzine to help me fall asleep.

Lately also when i walk normally for a bit , once i stop walking , my legs and body feel real heavy kind of like im pulling bean bags .