Current PA student here.
Maybe, your revision technique isn't right for you? You could try changing it up until you find one that clicks. Also, practice Qs.. a lot of them. A lot of my class mates use flashcards. I prefer to read from textbooks and write notes, because I learn from reading things. I look at where I'm not scoring on practice Qs and then go over those topics more, as they're weaker points.
Might be worth dropping another email to your lecturer or drop by their office, emails get missed, it happens. I'm sure they're not deliberately ignoring you
. Your lecturers do want to see you do well, they wouldn't of accepted your application if they didn't see potential or if they wanted you to fail. PA courses are competitive, if they didn't feel that you were the right student for them, they would of moved onto the next applicant.
Some lecturers can be more critical than others, but unfortunately, there's very little room for error in the working world of medicine, they have to be harsh sometimes. It depends if they're just a little on the critical side, or if they're genuinely singling you out. If you feel that it's the latter, then you're able to make complaints. If they're just critical, then unfortunately, it's a case of suck it up, listen to their concerns/feedback and do better next time.
Faculty staff will discuss students, that's not unusual. If they have concerns about your engagement with the course and content, then they need to be aware of that discuss these concerns as a faculty. They're not gossiping, they need to identify students who may need additional support for whatever reason. If a student is struggling or not engaging, it raises a few concerns on the well-being of that student. The staff are aware of how stressful the course is, that's why they're constantly looking out for signs that students aren't coping, which includes monitoring grades, attendance, engagement, etc. They're not trying to catch you out, they simply don't want you to become unwell due to the stress and intensity of the course.
If the lecturer said "oh, so you're..", then that's unprofessional and they were in the wrong. Students have a right to confidentiality, even if they were being discussed by faculty staff. Random lecturers shouldn't really be included in this discussion though, it's usually between key staff of the faculty (year lead, course lead, tutors, etc). Again, you have a right to complain, if you believe you're being treated unfairly, there are formal processes for this.
Just keep your head up, keep practicing on areas that are your weakest points, listen to feedback and act on it, speak to staff if you're struggling and seek appropriate support for your stress. It's a stressful course, no doubt about it, but it's not impossible.