First time my period is late and bfn

Hi. I have regular period and never ever late!! Usually when I woke up on the day of period due I see blood.

Today 19 of February, I am 3 days late. I tested on 17 at night and it was Bfn💔

I have been having different symptoms this month which I considered my self pregnant without testing because when my period is coming I have the same symptoms each month but this month is really different.

My husband want me to test today but I know I will see one line so I don’t want to stress my self more.

Any hopes? We have been trying for 7 months.