Hi OP,
Sorry that you are feeling like this.
You say psychologist in your post, but it seems that you are asking whether counselling or psychotherapy may help?
Many therapists do both, and there is not a clear distinction between them - both are talking therapy. But as a general guide counselling is usually shorter term and is to help you with the here and now problems; and psychotherapy is longer term, and explores the deeper issues that caused the issues with the aim of a longer term solution and being happy in your true self.
There is also CBT, which is what GPs can usually refer for, short term and learn techniques to adjust behaviour to counteract eg negative thought patterns.
Your college should have a counselling service for students- have you asked the pastoral care team what is on offer? They might have some valuable support for you?
If you do decide to go for private therapy or counselling there are two professional bodies, to be registered therapists and counsellors have to be properly trained.
Look up BACP and UKCP websites, you can search by area and also the issues you want to discuss.
Then have a look through the profiles, see who you like the look of and call them up.
It is a good idea to call a few, you will usually have to leave a message and they will call you back. The initial chat will be a brief conversation to get the basic gist of what you are looking for and them to tell you how they work. As well as practicality of when you are both available for sessions.
Listen to your gut instinct when choosing a therapist.