Feeling like that weight of the world is on my shoulders

Sorry to be dramatic but I really am feeling like this. I have so much to do with what feels like little help and I'm getting lost in feeling sorry for myself. My 4 year old has been an absolute terror the last few weeks. She's really acting out . I swear she is raising my blood pressure . Me and so thought maybe she was getting bored or acting out bc she knows her baby sister will be here soon so we have been going outbid our way to do more activities with her and take her places . The more we do with her the more she wants and the worse she acts !
My house is an absolute mess. I have been trying to clean it little by little but the problem with that is I find myself starting over and over at the same spot . I will clean the kitchen and living room... Next day I would plan to clean some other rooms but by then the living room and kitchen are a mess again. I just can't keep up. I have no family to help.. They love far away.. No friends and don't have extra money for a cleaning service . My hubby doesn't help... He's stressing about financials right now so I can't even talk to him about me feeling stressed bc he feels his stress is more important and doesn't want to hear it bc in his mind I think he thinks I sit on the couch most of the day.. Which don't get me wrong I do spend a lot of time on the couch lately bc I am feeling depressed and I'm just feeling like giving up on doing what I have to do. 
I don't even have everything I need for baby and I don't have a hospital bag packed and I just seriously feel like I have a million things to do and I can't do them. My blood pressure was up last appointment and it's probably bc I am stressing so bad!!