Ugh. Feeling very lost.

What is the latest anyone has gone until they got a positive result? It could be this urine wasn't concentrated enough or something but I got a negative result when I tested this morning even though I've been seeing some pretty obvious signs im pregnant (and for a second I thought maybe it was wishful thinking until my mother in law had a large conversation about how she thought I was pregnant with my husband so I'm not the only one) and I'm very confused and feelings very lost. Not sure what to do except wait a week and retest.