7 days late...

So I am now 7 days late. I have taken several ic's and all have came back negative. I have not tested yet today but I think I will test on an FRER. Has anyone experienced getting negatives on ic's but positive on FRER? Or do you think the negatives I have been getting are accurate? I spotted for three days almost two weeks ago but then nothing. I'm just really getting frustrated at this point. Any advice would be greatly appreciated!  Baby dust!