12 days after first iui

We've been trying to conceive for about 6 years (between deployments) with no luck. I recenty had an HSG test (OUCH!!) and 3 rounds of Clomid. After no luck we did 9 days of Gonal F and an HCG injection. 36 hours after the HCG injection the IUI was complete. I'm still in the 2 week waiting pergatory (12 days) and very anxious to find out if I'm pregnant. So far my only symptoms are heavy breasts w/sore nipples, very slight "pings" of pain in the lower abdomen, exhaustion, and today dark brown spotting started. I just want to know what the results are. Can anybody give me some confidence that I should expect a positive test in the next couple of days?