Hi Alana
Sorry your having such a stressful time. I had ectopic a year ago, but didnt have the US til i was over 7.5 weeks, my HCG levels did not rise properly which is what made them suspect it but really you need a whole series to look at not just one reading. As far as symotms went i didnt really have any i had no bleeding, i still had sore boobs, the only thing i noticed was i would get a cramping type pain in the ectopic side, which was really bad when i needed to go to the toilet (1's and 2's soory TMI)
In answer to your question though With my son i had a scan at 5w 2d and we could see a fetal pole and sac in the uterus so i would say there should be something visable in the uterus by now. I really hope you dont have an ectopic but if you do make sure you get all the info, i had my tube removed as it was very enlarged had a very big blood supply, the other option is an injection of i think "methoxarate" (soory know the spelling isnt right) which is what they generally do if they catch it early enough, i did read after though that it can seriously deplete folate levels for future TTC efforts so i would be asking about that. I was really p##sed off about having my tube removed but after i read up about methoxarte i was happy with the choice they made. I concieved 6 monthes later after a few more IUI's and finally IVF, so there is hope. Not that thats much consolation to you now.

I really wish you all the best sorry for the long post and prob way too much info but it is best if it is an ectopic to go in with all the info. Please PM me if i can help.
Sending you loads of positive cybervibes and that alls well. Good luck