If you need to be away for a week or two several times a year, you definitely need someone else to get to know your bird and be able to handle it to take care of it while you are away. You don't say whether you live with other people, spouse, childen, but maybe someone like that could do the job when you are away.
When you take your bird in for a vet visit, you will find out if anything is not as it should be, but once you get it home you will observe what is normal and notice when it is not normal by being with it on a daily basis.