Discharge during urination after ejaculation

Asalamalaykum everyone I am having an issue, basically what happened is that I masturbasted, and I thought all the semen had been released, so I urinated to make sure that there was no semen in the passage. a few hours later when I used the washroom, I saw some other liquid substance that was about to come out while I was peeing, but I held it in, this has happened before, when after ejaculation, I urinated and made ghusl, but after going to the washroom some hours later some sticky discharge came out after I was done peeing, there was no desire or anything, I am very confused should I do ghusl again? Or is this permissible, please help.