Anyone on or been on Omeprazole and get diarrhea?

Been on this stuff for a few weeks now, which was originally to sort out nausea and stomach pains. Other than a few headaches which is a common side effect I've been okay until yesterday and suddenly got diarrhea which is still going on today. Apparently this is another common symptom. Although it's possible I'm getting it for some other reason.

Just wondering if it's okay to take anything like Imodium or Diocalm with Omeprazole.