Doctor appointments

As I know of I  due April 11th and will be updated on that Tuesday but I didn't have any health care till last week and finally got to see a doctor.They did blood work,checked my weight and blood pressure and asked questions. Before my pregnancy I weighed 153 and two months ago I got weighed when I went into urgent care because I was sick and I had weighed 149 and I still weigh 149.I was wondering if any of you see your ob every two weeks yet?I don't remember seeing my ob every two weeks while pregnant with my daughter till I was almost 30 weeks.Could it just be because I lost weight and haven't gained any?