Does not look like an infection. Also, checking the gravity everyday is a good way to A. get an infection, and B. have no beer left when it comes time to bottle. Unless of course you are just putting the hydrometer straight in your bucket, in which case its just a good way to get an infection. I would recommend a hydrometer test jar and wine/beer thief if you dont already have one.
Take a gravity reading before pitching yeast when you're done brewing, and take another one after a few weeks when fermentation is done. I usually take mine (when brewing Pale Ales, IPA's, etc) right after cooling the wort, and after about 2.5-3 weeks when Im ready to cold crash. Then Ill check it 2-3 times over the course of a few days to make sure gravity is constant. All in all I check my gravity a total of 3-4 times (usually 3) during the course of making a batch.
Also, welcome to the hobby!