I need advice please don’t judge.

I found out I’m pregnant i took a test because i was 8 days late on my period. I’m 4 months post partum yes you read that right..i just had my baby #2 January 31st 2019 now I’m pregnant with number 3 and I’m beyond blessed. I’m just having so many mixed feelings. I feel overwhelmed. Here’s why: I struggle with the two i have.not parenting wise but financial wise. I love the two i have and i make it work but i feel like 3 kids would be extreme. My first born is 6 will be 7 this year and my second is 4 ‘months. Also with baby number 2 i had gestational diabetes and it was the hardest thing to ever experience and i already feel like i have gestational diabetes with this pregnancy and I’m only 5 weeks. I physically and mentally feel overwhelmed but also joyful if that makes sense. No i don’t feel depressed nor angry i just feel stressed and anxious and it’s normal but I’m only 22 and i feel like my two are good for now and baby number 3 will be good 5 years from now when I’m older and my others are older. Just opinions needed on this situation (YESS ALL 3 are from same dad.)