Lol, don't worry - it's normal to question. I make a dreadful patient

Ask for the consultant but be prepared that you might get the senior reg. If you don't like the level of answers you get from them, tell them you don't feel they are answering your questions and if they don't have the time to do so, could they please make an appointment for you to see the consultant.

If it does get to the point that the reg doesn't willingly answer, let their consultant know when you see them.