I wonder if anybody can advise me.... I would be very grateful. My symptoms started some 5 years ago following open heart surgery to replace my aortic valve. Firstly the sighs (mine a sharp intake of 2 or 3 breathes when inhaling), then GERD which was treated with Omeprazole (has not worked}, then stiff muscles mostly calves and shoulder, then muscle spasms usually in the legs and mostly at night and now a swollen tongue and sounding of the sounds s, ch and f becoming slightly embarrassing. Also at night my heart beat seems to resound throughout my body and sometimes my whole body (but mostly my arms and shoulders) seem to have a tremor. On top of this I recently had a headache (tension, forehead and temples type) that lasted 3 weeks and although prone to an occasional migraine I've had more the 30 over the last 2 months. Signing up to PAS and reading the 'blurb' leads me to believe that the root may be Vitamin B12 deficiency and associated problems. However my GP says my blood tests show that everything is normal apart from my Vitamin D levels which are low. So his advice is to take over-the counter 99p Vitamin D tablets. I cannot believe that this is the root of all my symptoms. Any advice will be gratefully received... can't go on feeling this bad every day and every night.