Hi Amy, my names Annie, I can relate to what your going through. I have had diabetes since I was 9 and am now 21 and this past year I had a very similar experience. I wasnt doing many sugars and my hba1c went high. I felt like I lost control but didnt tell anyone as I felt I was failing, which made things worse and my control got worse and my sugars didn't do what they were meant to as the stress was sending me high. I finally told a tutor at my uni and they sat with me and just listened and spoke things through, I then spoke with my DSN and put a plan in place. Its hard, but although you have had it for the ladt 15 years thinga change, where you are in life how your diabetes reacts and the things you do day to day. And all of it impacta on diabetes unfortunately. It is not something you can really control on your own and this is what I have recently learnt.
I found that talking to someone anyone they dont have to be medical just so you can hear it and once you have said it once I find it makes it easier a second time. Then speak to your DSN and put a plan in place to do more sugars. Set alarms on phones have an app on your phone. What ever works for you. Take it one step at a time. Don't expect it to change over night, keep at it I am sure you will soon be back on track.
Hope this helps, any questions just ask, we are all here to help each other. Don't worry you are not on your own. Xx