"Stellar glow" in the context of fertility can refer to the "pregnancy glow" that some women experience during pregnancy.
It can also refer to specific skincare products, like the "Stellar Glow 24K Gold Facial Serum", which are marketed to enhance skin radiance and hydration. 
Additionally, some brands offer products like "Stellar-Belly Stretch Mark Cream to help women maintain skin health and potentially minimize stretch marks during pregnancy.