I’ve two urethral openings. Is that normal? Should I visit a physician?

It’s exceptional to have two urethral openings. Normally men have only one urethra and one opening. But sometimes the urethra splits in two, as in your case. Many men are not aware of this because one of the two tubes ends blindly somewhere in the penis. But in your case they obviously both have an opening. Normally the opening at the side of the stomach functions best. If you don’t experience any problems there is no reason to worry. But it might be a good idea to visit your physician to make sure everything is okay.