Is it oil, water broke or discharge , or semen


Okay so last night I had sex , this afternoon I put fish oil pill in vagina and then I danced for about 30minutes and did squats etc. I changed undies twice . This first pair was oil for sure came out instantly but I showered n changed undies n now they are wet again I just don't know which on it is . And what point will I be able to tell ! HELP!