Is there a line? Am I crazy?

I'm 3 days late. I did a test a few days ago in the am. I see a line but my husband doesn't. Did another one a day later,  same thing. Took one yesterday afternoon and we both think we see a line. This morning I took another and I see no line 😒 
Is it possible to not get good results in the am due to the acid in my ph balance first thing in the morning?