Anyone else have kids close in age? I need reassurance

I just had a beautiful little girl in October, she also makes my 4th. When I found out I was pregnant with her I just knew to take a test. I have that feeling again and it doest help feeling nauseous and the way my boobs feel. Please no bashing or rude comments. I just need to get this off my chest and see if anyone else has been in my shoes.