EGCM after protected sex

General question! I had protected sex last night & in the early morning. (He was in me early on without a condom & I changed that asap; he didn't cum in me.) This afternoon I had a large egcm discharge after using the facilities. I'm pretty watery right now and not much egcm at this time. Based on the app I use I assume this is just because I'm about to ovulate right? I've seen posts where it might be a mixture of cum as well but he didn't cum in me. I'm a paranoid & anxious person so I took plan b anyway. Any help is appreciated. Thank you.