I've felt that way for about one day... Ok, maybe a week.
While you may not feel any more competent than you were during 1st semester, remember this: you're learning new stuff. While you're in that mode, you'll always feel less than competent. Looking back, do you think you could properly mentor a 1st Semester student and help teach them the skills they'd need to know in your program? If so, you're certainly done well. If you could at least give some advice to 2nd Semester students about doing things, you've come a long way toward mastery. It'll take a while before it sinks in that you can
do it! When I first became a Paramedic, it took me about a year after
I got my license to feel
like I'm a Paramedic, not some EMT-fraud that's masquerading as a Paramedic.
In some ways, I feel very well prepared for 3rd Semester, yet in some ways, I'm still worried about it. Could I go back and mentor my junior classmen? Yes. Easily. And in a way, I feel a LOT more competent and confident in what I'm doing now. I'm very ready to take on the next Semester and continue to excel.
Anyway, the point is that it takes a while to settle-in and feel like you're capable. Since you're still learning, you won't feel like that for a while. I know that as I approach new info/skills, I'll begin to feel uncomfortable again, but I know
I'm very comfortable with the basics of things now.