Mexican Cream Guava?
Here's a matching description from a site called "Four Winds Growers":
Upright tree, originating from Mexico. Small to medium-small, roundish fruits. Skin light yellow, slightly blushed with red. Flesh creamy white, very sweet, fine-textured and excellent for dessert. Seed cavity small with relatively soft seeds.
I've gotten Mex. cream guava at my local grocery store in winter, but they don't have the red blush like yours. How big are they? Like a couple of inches or less?