I know I'm insane, but this is 18dpo and I swear I'm going to stop now. This is the last one. Final word.
[cough] Apart from the CB digital I'm saving for 22dpo to see if I get a 3+ [cough]
In all seriousness I've kept testing this long for the reassurance, and I think that I'm mentally in a slightly better place than I would be if I hadn't, but someone seriously needs to invent a uterus with windows so you can check what's cooking whenever you fancy.
Or induced a coma til you miscarry/give birth. Either or.