Please help

Please help I want to know I am not alone in feeling this way!! I have read about all the post party feelings and things but nothing really prepared me for what has bern going on . It’s like a whirlwind of emotions I can be perfectly fine one minute and crying over absolutely nothing. My brain just doesn’t stop. I am getting anxiety near bed time with fears our little one won’t sleep. I am upset at the idea when my husband has to go back to work knowing I will be here all alone. It would be nice to know there are others who have experienced this. I am 1 week pp. when does it get better or is there something I can do to help in the mean time. Please and thank you!!