I don't know what to do 😩

Feb 9th we found out we lost our baby. 4 days before my fiancés birthday. And I was very positive at first but lately I have been going down hill it seems like.... I don't want to leave the house I just can't get up the motivation to do anything... Everyone is getting worried about me... I'm trying to keep positive but everyone is getting pregnant around me and that's all they want to talk about with me. I hardly want to have sex or let alone do anything even trying to dishes and laundry is hard for me to do.... I can't help to feel this way.... Just lost.... I've been trying to keep myself occupied with sewing and other crafts.... My fiancé owns his own business and has to be gone most of the time. After two years and half years trying it finally happened.... And then it was gone in a blink of a eye. I just don't know what to do to get myself out of this slump.... If anyone could have helpful hint how to I would really appreciate it.