Hi Liljax,
You are not alone and the way you are feeling is normal and you will have good periods and challenging periods. My child is 4 years old and I have felt like this on and off. It is hard doing everything all on your own! Take one day at a time and everyday is a new day to start a fresh. You are doing amazing! It gets easier in the sense that you learn to balance your life as a single parent. You have identified your needs for self care and you will find a way to be able to fit this in. I seems you have been through alot and perhaps there are unresolved feelings about what has happended. Do you feel like you maybe depressed? Do you have someone you can talk to family, friend? If you you may find it helpful seeking talking therapies or using this platform to talk.
I wish you all the best in this new journey and we are here if you need to talk.