Incomplete BMs?

Recently diagnosed with IBS. I don’t have severe diarrhea or severe constipation. For the last 2 days when I go to the bathroom a few blobs come out and then about 1/2 an hour later I feel like they’re still inside and then I go to the bathroom and a few more blobs come out. They are formed but small. I just don’t feel like I’m completely emptying. It’s such a weird sensation. This is the first time this is happening to me. What could be causing this?