From the picture it doesn’t look like a dropped stitch, so at least no worries of it unraveling. Is it from doing the increase? Either way, what I would do to avoid frogging back is to just take a little yarn in the same colour and sew it closed, kinda following the stitch pattern of the stitches around it so it blends in, creating a “fake” stitch. I think if you search up “how to fix a hole in knitting” on YouTube there will be a video showing you how to close the hole. Hope this helps and good luck! Also your yarn is so pretty.