The likely cause for your symptoms would be a multivitamin deficiency
, calcium deficiency
. These kind of pains do occur in peripheral neuropathies as well.
When you go to the doctor get your calcium levels, Vitamin B12
and Vitamin D tested. You will benefit by taking nerve supplements like Neurobion
forte for a few months.
Since you are pregnant now, you will be on calcium and B-complex. So there is no need to take extra medicine for the same.
It is better not to do anything about these now as you are pregnant and unnecessary investigations and treatment is unnecessary in pregnancy
Hope this helps you. Wish you good health.