Thanks for everyone’s response. There is no extra media at the end, the out point is set at the right place and I checked that every clip and sequence is 23.98 (I went into sequence settings for each sequence and I checked the clips in the browser). Is there anywhere else I should look?
Out of curiosity, I tried exporting the first 10 seconds of the sequence and it came out to be 12 seconds long!
For reference, I had copied and pasted media from other sequences into this master sequence, but it’s all the same footage and set at the same sequence settings. Totally confused here.