My 7 week old has been crying non stop. The only time she isn't crying is when she's eating or sleeping. She's been drinking 5 ounces. So I thought maybe she was still hungry. I uped it to 6 but then she just throws it back up. So I went back down to 5. Then I thought it was gas. I've been giving her gas drops for about 1.5 months now. That's not working. Rubbing her tummy and bicycle legs only work for a short period of time. Is she sick? What could be wrong?