Hello Tracey,
I think a healthy alert to it is warranted but don't think you should be worried, because worrying does nothing :p . You've been through a benign growth before so it just may be history repeating, but I believe things like this become "suspicious" if they grow by more than 20%. I do think you should have the test, take a breath and try to keep it out of your mind until the results are in. It's a difficult thing to do but there's no value to allowing it to weigh on your mind.
Wishing you the best. Please update us when you know what's going on. :smile:
Rebecca