Been on bed rest for 2 months. Sitting upright I feel wobbly, tense shoulders, wobbly swimmy head. I put head between knees and head spins. This bp?

Not surprising. In a study of medical student, 3 days of bedrest resulted in weakness and dizziness with standing. It's hard to imagine a recommendation of bedrest for 2 months. It would be expected to be associated with a high risk of blood clots in ones legs and resultant pulmonary embolism, and osteoporosis. Physiotherapy can greatly help in achieving a recovery.