A graduate program I'm applying for in mathematics requires fluency in English but didn't set the lower bound for the IELTS score. I'm very good at English but I went to the test unprepared and got severe headache during the test, couldn't complete some tasks so I got 6.
5.5: reading, listening and writing. 7: speaking
But in reality I can do better. My BSc. thesis is well-written so my question is, if I sent my IELTS score would it be a sign of weakness in my application?
It would be very difficult to take another test before the deadline of the application process but not impossible though.