I've tested today and two cheapies same brand 1st one this morning thought I seen sumert but thought it was in my head

So I thrown it later on after dinner took another and a faint like I could deffo see so faint though I couldn't catch it on camera! So I had a 5days early test different brand from the cheapies and I tried that about 1hour ago and there is another really thin faint pink line but again too faint catch it on camera? Had it ever been that faint your not sure it's real and its turned out to be BFP! Although I've seen it on 2 different brands maybe they are evaps ? The camera can't pic em up ?