43 and 3 days late

One day late.. sometimes... but I've been having sex daily with my man and on my highest fertility days and I'm 3 days late. This hasn't happen since I was last pregnant. I am 43...
 I had some light bleeding on Sunday, Monday and Tuesday now I got nada! Period was due Monday.  I was nauseous yesterday a better part of the day and evening and I'm very tired. Boob tenderness a few days ago but nothing right now. I would be ecstatic if I was pregnant because I'd really like to have one more child especially with my boyfriend. What's the possibility ? I'm not scared, stressed or worried about it but how long do you think I should wait to take a test? The thought of a baby makes me so unbelievably happy especially after loosing one 5 years ago. 
Anyone else out here older and pregnant or trying? Any suggestions on how long I should wait?