I had my 2nd IUI on Feb 5. I spotted on day 12. Nothing on day 13 or today. I had my beta done and the RE said that it was technically positive but said I shouldn't get my hopes up because it wasn't high enough. I am on prometrium vaginally and have to go for another beta on Monday if AF doesn't come. I am optimistic and scared all at the same time. Has anyone ever sustained a pregnancy with such a low level?