Measuring small?


I've been told don't worry but now I can't stop worrying. Yesterday I went into my appointment for the baby at 28 weeks. Well while I was there she measured me and said I'm a bit small. Now at 30 weeks I have to have a growth scan to check on my son. The doctor said it might be just from me being so small. I was 105 pounds before pregnancy now I'm 140. Has this happened to anyone else?