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While everyone’s situation is different to some extent, there are MANY here have experienced something similar to what you describe. On your own, it can be a very difficult set of circumstances to sort out. The human mind doesn’t like dealing with change and that is quite a likely outcome of you situation.
Many people here have worked with therapists and have found the experience very helpful. However, you must find one that has experience and interest in gender issues. Lots of good therapists out there, but not everyone has this experience.
I will suggest a couple of things:
The Psychology Today magazine maintains a searchable database of therapists all over the world, including the UK.
Do a web search for LGBT or transgender resources in your area. Sometimes LGBT centers offer therapy services for free or have adjustable fee scales.
Please complete your Profile page as it really helps other members get to know you. You can update it any time if something changes. Over time all regular threads will sink to the bottom of the pile, while your Profile page will always be readily accessible.