Negative tests sadness

El

I am 14 days late on my period and I just took another pregnancy test and it is still negative :( I have an appt next week but just really upset that I just don't know what's going on with me. :( I have a 10 month old baby my period returned when she was 3 months and was normal. and I did have sex when it said I was ovulating so you'd think I'm pregnant but I guess not :( im just venting. Super let down tonight.