Teething,feeding too much? Idk.. Help!

This week my daughter has been spitting up more than usual. I've just started introducing foods to her. We tried pureed banana and apples so far. I only feed her "foods" in the evening. The rest of her feedings have stayed the same. Today for example after her 3pm feeding she was spitting up more so, then I have her the apples at 4:30 (try to space it in-between bottles) and she spit up a little. I feed her 1tsp and a half of food. Are these foods too much for her to digest? I did also take her temp. It's 99.5. higher than usual..But not a fever yet.. she will be 5 months next week. And also wondering if this could be a start in teething? Help! ftm here😕