Defeated...

Today I am 19 days late. I have never been this late. I realized my period was late when it was 3 days late. I tested but was negative, tested at 10 day and negative, tested today and negative.I had the tiniest spot of pink on day 3 late after sex and have been nauseous for the last week but that’s it. No symptoms or signs of my period yet...Yes I have made an appointment with my primary after today’s negative. We have been trying for 3 years. I’m 23 and have no health issues to my knowledge. My husband is health, fantastic and supportive. So why am I so broken that I can’t get pregnant and everyone around me can so easily. I know the whole you aren’t out until AF shows up but can I still be in with negatives at 19 days late?