Hi, and welcome to the forum. As you know we can't diagnose, and it's a real shame that you're not able to have therapy yet, but I would take advantage of the free therapy available at your uni when you go back.
It may be that your therapist isn't in a position to actually diagnose, but she can certainly help you. If the therapist is good, in some ways an actual diagnosis is irrelevant. What matters more is the work that you and the therapist do together. By looking at your past, and making a connection between the way you feel and act today, a lot can be learnt, and certain negative patterns can also be unlearnt. What matters most is the work you're prepared to put into the therapy.
It can be a painful process as old emotions are unearthed, but your therapist will take you slowly at the right pace for you, and you'll be in a safe environment. She will be adequately insured and supervised, and trained to help.
Perhaps you could use this time as a preparation for therapy? The more you begin to understand yourself, the better. Keeping a mood diary might help you to recognise certain triggers and understand your reactions to them. You'll need to be totally honest with yourself, treat yourself with compassion, and be prepared to try to love yourself, just as you are, and not as an idealised version of the person you aspire to be. That means understanding and accepting all your strengths, weaknesses, and everything about yourself. Strangely, it is this kind of self acceptance and realistic self love that can actually evoke therapeutic changes.
Please visit here for support and encouragement, bearing in mind that the forum is not a substitute for therapy.