nightmares

i have this put as anonymous cause this just feels so embarrassing to me. i keep having these terrible dreams that my baby is kidnapped in the night like so bad im up all night unless im "sleeping" next to him and even still i wake up a ton to check he's ok. im so on edge about this. why am i dreaming like this it's been happening a week now and i hate it I'm so anxious all the time i am taking medication for ppd this is just recently started in the past week. we live in a very safe area and i haven't watched anything that should be making me feel so crazy like this.