I have an exact photo of treating an indented side wall of the nose in my before and after photo collection. So, the short answer to your question is that nonsurgical rhinoplasty using fillers can most certainly be used in this region to help achieve better symmetry between the sides. However, ...
Thank you for your photos. You can definitely build a stronger bridge with fillers. By also strategically and safely injecting an area of the tip, you can more definition and more symmetric nostrils as well. It is best to have an in-office examination to determine which areas will benefit from...
I do not recommend you use injectable fillers if you are pregnant as there is not sufficient research conducted on the effect it could potentially have. Wait until you complete your pregnancy and breast feeding to consider injectable treatments again.