Yes. You got it right. Feminized seeds should be all females.
Regular seeds have both males and females (so that’s when you have to watch for them to show their sex and then remove the males, but you shouldn’t have to worry about that).
And yes, try not to stress man. Everything is still looking good! Just try to enjoy the whole process. It’s all a learning experience. Just keep learning as you go and take notes so you can look back and know what worked and what didn’t. I know it can be stressful when you paid money for the seeds. But if you keep hanging out here, you will have plenty of new free seeds to grow before long anyway! lol