Please help?

Hey guys. About a week ago after jujitsu, I went home and noticed that I had an almond sized external hemorrhoid. I’ve never had this before, but it makes sense with all of the heavy straining. I have a few questions.. it’s been a week and it hasn’t shrunk much. It doesn’t hurt anymore, it’s just not really getting any smaller. Is this normal? Should I go to the doctor or give it some more time?
Also, this is bad timing as we leave for a pre-planned cruise for 7 days in just a few days. I’m worried that I may have to cancel the cruise and lose my money and vacation time over this. Maybe I’m just overly stressed because this has never happened before. Any advice?