Hi, really anxious about this so hoping for some help. Got my bfp Friday evening, then again sat morning, this morning and tonight...I keep thinking that the line should be getting darker (closer to control line colour) but it hasn't changed at all and I'm worried that this is going to end sadly having had chemical pregnancy before. Sat mornings test was a first response and the others have all been Amazon cheapies. I read somewhere that the hormone doubles each day so line should be getting darker...can anyone shed some light? Think af should have arrived today, maybe tomo. I can't quite believe it's happened and now I feel so anxious. Thanks in advance