Yes. Definitely possible. I've been in remission and felt bad. There are also other aspects of Crohn's, such as intestinal adhesions post-surgery that can cause issues. There could also be intestinal damage--strictures or other formations like fistualas--from prior inflammation--that continue to cause issues even when in remission. Finally, you could be having side effects from medication.
Hope you feel better and not trying to scare you. Just letting you know that it is normal to have symptoms when in remission. If they get very bad, you should probably go back to your doctor, of course, and get further testing.
Best,
Matt (Team Member)