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1) The fine tremor or feeling of shakiness of limbs might have the origin from spinal nerve
impaction result from disc herniation and also from degeneration vertebral body with the sprue formed. Others causes of shakiness and loss of tone in muscles could have the origin of electrolyte imbalance
and transient period of hypoglycaemia
. So you need to take care about your nutrition and fluid supplements. Check your blood sugar too. The calves muscles cramps could be due to deficiency of essential micronutrients. add more natural fruits and green vegetables to your daily diet menu. Vit D and Calcium supplements
is also highly required. When you feel pain after a prolonged standing or sitting posture result from a constant pressure at any point of spinal nerve either from bulging disc
portion or osteophytes you must take rest that time. Any extra pressure could cause more neurodegenaration. physiotheraphy is highly required. To relieve the neuralgic pain of lumbo sacral portion and lower limbs ( if you have presently now) you can take some homeopathic medicines ( Rhustox - 10 M / Colocynth - CM / Chamomilla CM / Mag phos CM ) as per the symptoms which will give instant and substantial relief.
2) The sinking sensation sometimes with palpitation
and throbbing of base of head all are the symptoms of transient period of hypoglycaemia syndrome. Hydrate your body sufficiently. Take your meals in time and add more natural stuuffs.
3) your gyanecologist have already ruled out the menopausal syndrome
4) To ruled out other causes you can consult to your neurologist