At only 19, deciding you’re “broken” is way, way premature. I understand you are concerned. I’m worried that you are so concerned you are defeating yourself. Orgasm requires you to be relaxed, not worried that it won’t work.
By all means, talk to your gynecologist. It’s unlikely but still possible that there is something medical going on. It’s always good to check. But it’s more likely that you are putting too much pressure on yourself or you are trying too hard. Many, many young women report the same concerns. Here’s a website from the UK that you might find reassuring.
I’m very glad you have a loving partner. I encourage the two of you to get the focus off orgasm. Focus on the process of pleasuring each other and loving each other, not on the goal of getting off. My guess is that you’ll eventually find out what brings you to climax if you’ll just give yourself time to explore without judgement and pressure.
I wish you well.