Hi, I am 39 yrs and 23+ 3 days pregnant. initially my Doc asked to take susten 100 everyday but after seeing my level 2 ultrasound, she asked to stop this medicine. now an then I have lower abdomen pain at my left side which is unbearable so Doc advised me to start once again this medicine. please suggest me is it safe as Doc was also surprised to hear that at 6 month I require this medicine.