While I’m certainly not a gynaecologist, it sounds as if your symptoms might have a psychological overlay with anxiety leading to the other issues. It might be worth seeing a therapist who deals with such issues - perhaps with your partner.
In some ways it’s a bit like sports, where you hope to perform well and the pressure of wanting to do so ends up hindering your performance or experience of the event on the day. Psychological elements can have a huge impact with the evolution of physical symptoms.
A gynaecology review might help exclude a physical condition and so perhaps a combined approach is most suitable.
Bw
Dr Dinesh