If you are concerned about a change in your vaginal discharge, either because it looks, feels or smells differently, it would be a good idea to get checked by a health care provider.
Sometimes these changes are part of your normal hormonal cycle, sometimes they are related to an STI, or sometimes they can be because of a yeast infection or an imbalalance of your normal vaginal bacteria.
One common reason for changes to the odour of discharge is something called Bacterial Vaginosis (BV). Information on BV can be found here: https://smartsexresource.com/topics/bacterial-vaginosis-bv
Hope this helps.