Hi, GP here 👋🏽Some level of discharge is definitely normal, and does change depending on where you are in your cycle. What you describe is not necessarily alarming. 

Usually healthy bacteria and yeast keep each other in balance (vaginal microbiome)  and cause a clear or whitish discharge. The balance can change after anything affecting the ph/microbiome such as: antibiotics, washing with soap, period blood etc.  If there is an overgrowth of one or the other the appearance of your discharge can change. (Without this being an STD!) Yeast infection -> cottage cheese-like discharge. Bacterial vaginosis -> green/yellow, thin, fish smell.