That's a common problem. They do say to leave the starter studs in for a few weeks.
I had one hole close up on me and had to get it re-pierced. I had the original piercings done with a piercing gun at a hair salon, but I don't recommend that. For the re-piercing, I went to a tattoo and piercing studio. The guy looked as scary as the premises, but he was scrupulous about cleanliness, even changing gloves between ears and did a good job.
I still have trouble sometimes finding the holes. To minimize that (and to minimize my own dysphoria) I keep earrings in at all times except when I sleep. Around the house, I usually just wear small silver ball studs. It makes a difference which earrings I wear, for getting them in. The post sizes are different. Getting a pair with fat posts in is difficult. But once I have them in, changing to a pair with smaller posts is easy, because the holes are stretched out.
