Hi Balbs, welcome to the site.
I can say that having a biopsy does not hurt and I certainly did not need a general anashetic. It is usual to be apprehensive but in reality the procedure is quick and simple. A small amount of local anasthetic is used and you are talked through it as it happens, just your dignity is compromised slightly, from the team in the theatre it is seen and undertaken by them day after day and it is part of "normality".
A short time in the recovery room with a cup of tea and a few biscuits leaves you ready for home in no time.
It would be better to have the biopsy than not as, to me, not knowing and wondering would be the worst option.
I hope all goes well with diagnosis.
"Life is seen differently upside down, take another viewpoint..!!