You should call your doc and ask them to help you to understand a little better. It sounds like they are not worried though, so you should be fine. The ultrasound will likely be vaginal and usually happens around 6 week. They do it see the heartbeat and confirm that the wee one is in the uterus and how big it is. Good luck!!

__________________
Laura
TTC #1 since May 06
Me: 37
Hubbie: 36
May 06-March 07 naturally
April 07 to Sept. 07: IUIs w/ 50 mg Clomid
Laparoscopy Oct 2: External fibroids found
Abdominal Myomectomy Oct 31: removed 12 fibroids
Nov 07: IUI #5 w/50 mg Clomid
Dec 07: IUI#6, no meds, 40 day cycle
Jan 08: Started Follistim, IUIs 1/30 & 1/31
Feb 08: Follistim, IUIs 2/23 & 2/24 chemical pregnancy
March 08: Follistim, IUIs 3/25 & 3/26