... previous miscarriage. I never do that w any of meds, but this is a serious drug. I usually wean off within 7-10 days. I'm doing this in 5. or just stop it. On one site it says class D med and another class c and I read both of them. My doctor is on vacation and the nurses know I might be pregnant and said nothing!!! I will be 1 week exactly tomorrow pregnant I hope. Cant find out for sure till Thurs or Fri of a result of a blood test.