First of all big hugs to you. I am sorry you are having such a hard time. You said in your post that you are on medication, so I assume you have a doctor treating you. Beyond that, know that having your oldest being so young, things are probably the hardest they will ever be. It seems as my oldest gets older, because she becomes more independent and the others follow her lead, things get easier for me, even though I have more children to take care of. My advice to you is to pray every day! I have received so many graces since I began praying the rosary daily. I also try to say other prayers throughout the day, and I cannot begin to tell you how much it helps. I will say a prayer for you.