Feeling sad :-/ and need advice

Missed my period last month (and I never miss a period) then this month I was 4 days late so me and my bf were really excited and was gonna take a pregnancy test the 24th of this month but right after he left for work today I started cramping really bad and now I've started my period :-/ should I wait till he gets off work to tell him the bad news? I don't want him to be bummed at work but yet I don't want to hold in my upset feelings about this all day till he gets home either... Idk what to do