post partum advice please?

Sammie • Jasmine 2009 and Elijah 2017. Isabelle 2019👧🏽👦🏽👶🏽❤️
Hi ladies finally had my little boy last Thursday and ever since then I've had TMI loose bowels of the yellow colour and a bad headache midwife has advised I see a doctor as if was a bug would of passed by now .. I can't get into my doctors until Monday morning .. advice I need is its rare to have loose bowels after giving birth n I'm concerned now has anyone else gone through this? I know most people get constipated so I'm just worrying. Thanks in advance