My RE told me not to test until 17 days past iui. I could not help myself and tested on 12dpt/10dpiui until this morning(14dpt/12dpiui). I have gotten VERY VERY faint lines eveyday on the cheap internet test. I also used frer and get a nice bfp on 12dpt/10dpiui and even darker bfp on 14 dpt/12dpiui. My question is do you guys thing that it is still the trigger or do you think its a real BFP? Also how long does it stay in your system? My RE never said anything about when it should be out.