I think your pregnancy and your horomones are playing a very large part in your feelings of anxiety
. You didn't say if this was your first pregnancy
, but if it is, I thinks it's really "normal" to have some fears about being alone. I know I did during my first pregnancy when my husband would leave. I became quite afraid that something would happen when I was alone and spent most of the day being anxious.
Are you a military wife? If so, that might be a contributing factor.