Clear discharge & switching pills

So I'm switching from loestrin to rigevidon today after my withdrawal week (as the doctor told me to) due to my body not adapting well over the last three months and last night/today I've had some clear elasticy discharge. Could it be ovulation? Or is it just a side effect of the pill and the end of my withdrawal week?

Today I had sex (with a condom), could that be a part of it?

Thank you xox