The 37-times capped Wales hooker is due to meet the surgeon who operated on his neck in June to decide whether or not he is able to carry on. McBryde, 35, a British Lion in 2001, played in four of the five Grand Slam games as a replacement but insists he will retire from the game if he fails to get the go-ahead in two weeks' time.
"I've had a scan and now I must wait to speak with the surgeon to see how things are going but I'm not putting any pressure on myself. Without medical backing there is no way I am carrying on because my health is more important than rugby," said McBryde.
"I really have no problems with making the decision to quit because it will be based on health grounds. I've had a longer innings than most and achieved a lot.
"It would obviously be nice to carry on, especially with the exciting season ahead, but if it doesn't happen then so be it."
GB7s women left their England base to train in Wales this week. Olympic Games hopeful Rachael Burford gives WRU TV's Graeme Gillespie her thoughts on Welsh teammate Jasmine Joyce - a 'one touch wonder'
The GB7s women's squad is currently training at Wales' Centre of Excellence where assistant coach Richie Pugh tells WRU TV's Graeme Gillespie some 'tough calls' will have to be made when it comes to finalising the 12 spots for Rio's Olympic Games.
Wales U20's Billy McBryde is looking forward to starting his first game against New Zealand this afternoon in the World Rugby U20 Championship where his side are looking to gain revenge from last week's pool defeat to the Kiwis.