How to manage house and a toddler when you have no support at all

Hi ladies, I am 6w 2d pregnant. Expecting #2 this time I have 16months fussy eater & energetic toddler, having lots of headaches, dizziness & feeling very tired cause of that not able to keep house clean or cook or do a good take care of my sweet baby. Feeling so bad... Can't afford to go out n eat everyday.
 Last time I had a great support from my hubby but this time he is very busy 7d a week so he can't help me out; he just come home to sleep few hours & I have no family member or friend who can help me... Plz help me what to do...