Applying to dental school through Biomedical Science degree

Hello, I am currently at my final year of biomedical science degree and doing my UCAT exam to apply for dental school by October. I am currently reading a lot about people experiences and how are they finding it difficult and not receiving any offers even that they had a biomedical science degree. I am new to the field and I have only got two months to finish my application. I have spoken to some uni’s like Bristol and Newcastle and told them about my situation they said that I can apply through my current degree, but it’s still competitive. I am so nervous of what could happen if I get rejected. I have came long way for this. (The reason why I didn’t apply straight to dentistry because I couldn’t enter A levels as I came late to the UK, however I worked hard to achieve this goal and here I am). I really need advices of what I can do in terms of applying, graduate or undergraduate, and if not is there still ways I can fit through clearing please inform me ? Thank you