Hi,
I had gone through your problem and can understand your concern for your sister. Your BP is very low and for that you need to take plenty of liquids, take sufficient rest and regularly check your BP.
For
severe cold, i want to know whether it is associated with
fever,
cough or any other symptoms. You should do
steam bath and avoid going in dusty environment. You need not to worry much about cold,if it is not associated with fever or cough.
As you are 9 months pregnant, still you can wait for few days to check whether baby's head has descended or not. If i were your treating doctor, i would have given trial for normal delivery and then go for C-section rather than directly going for C-section, because your 1st delivery was normal.
So my advise to you is that you can get 2nd opinion with another gynec and then act accordingly.
Wishing you best health and best of luck for your
pregnancy. please let me know if you are having any further questions, i will be happy to answer you.