Hi you don't have to worry about this at all.
White discharge is present for many females in different phases.
You have to worry only if
- if there is a lot of discharge
- if the colour is not white
- if it has associated foul smell
- if its itching or curdy
You have a lesser qty , white , non smelling discharge . Which means it's normal n nothing to worry.
Next Steps
you already had an internal examination by a doctor , which is more reassuring.