Hello, I am having problems putting down my 4 week old. Everytime I feed her, than put her down for a napy , 10 minutes later she is crying. I have tried even feeding her more but its the same situation. I never can put her down without her crying 10 minutes later. It is not her stomach, I have tried gripe water and gas drops as well. What can it be and what should I do ? Thank you !