April Blues

So here goes, I'm a 37F unfortunately we lost out little peanut at 13 weeks last Dec. P would have been my first but it wasn't meant to be. After a difficult 8 weeks of none stop AF I got back to my normal cycle in Feb and March like before we cought. Me being me getting obsessed with TTC tested 5 days before and the day before I was due on 5th April both negative! So fast forward April 5th comes no AF ok will see whats happens tomorrow....nothing....the next day.....no. So getting all excited I tested when I was 5 days late....negative. So I have done 3 tests all negative and still no AF. I feel off, like somethingis different I have for over a week now, discomfort in my stomach but not in the normal way we all have the joys of each month. But I dont know if its just all in my head and I'm the one creating the missed/late AF. Do I test again? A doctor want do anything/see me till its been over 90 days without one. The whole week has been torture