At least you have questions, otherwise I would suggest your a day late and a dollar short.
Baby needed your help before you got pregnant, same goes for your health now and for the future. YES, the cramps are a SIGN of nutritional needs such as natural calcium, who knows what the crap is your chiropractor suggested, if it looks white, then I suggest your only harming your health.
I suggest you set down and read the Dr. Mom Book NOW! I suggest you watch her Videos NOW, I suggest you start buying/reading books on vaccinations NOW and if the future dad refuses to understand vaccines, then your in for a long rough road ahead if your wanting to follow more towards NATURE!
Not to mention that I assume you have already done the standard prenatal vitamins. medical testing, etc., etc., etc..........
----------------------------------------------
I suggest the Dr. Mom education NOW
The Childhood Disease book NOW
Vaccination books of your choice on the internet, such as shot in the dark, etc..
I would suggest Christopher's herbal supplements for pregnant women, but you need to read first, need to be on the same base with the father, etc....all of which you are in a predicament in doing this late.
Your under medical care and the education I suggest will have you at odds with what you trust, so I can only suggest you read/learn/apply and thi baby can have a better start once born and your next one a better start before conceived.
GOOD LUCK,
MH