There are ways, but it really needs to be determined by a trained doctor for a couple of reasons.
.. Not the least of which you can't really see in there that well your self.
A lot of patients see me with complaints like yours, and although most have nothing more than a pesky hemorrhoid that can be treated easily with topical medicine, some have other things going on that need more attention.
I'd recommend you get seen, if not for anything else than your own piece of mind. Issues like this are usually taken care of by your primary care doctor.