Negative pregnancy test

So on my period is now nine days late and I took a pregnancy test and it’s negative I don’t know what to do I don’t know why my period is so late I have a doctors appointment Monday to get bloodwork to see if I’m pregnant or not I’m just so over these negative pregnancy test it’s so hard being TTC I had a miscarriage and June and May but I am trying to stay strong for my self it’s just so hard I don’t know what to do I guess I’ll have to see what happens at the doctors Monday and see what’s going on with me