I Had Sex With A Condom And After Ejaculating I

I had sex with a condom and after ejaculating I kept going for about 20 seconds. After I pulled out I noticed some sperm was along the shaft of the penis. The condom also seemed rolled up about a centimeter from the base. Now it didn't seem like any leaked but along the base it did seem somewhat wet. Is this from my partner mixed with sweat or would this be sperm that could possibly have leaked?