Discharge can mean many things, such as you may begin your period, you may ovulate, you might have an infection, etc. It's very difficult to try to go off of symptoms, as they are unreliable, so just wait for your period to come. If it is late, then take a home pregnancy test. Otherwise, just try to not stress about it. Also, I would look into using protection. Having a baby at a young age is very difficult, so use this as your learning lesson to start being more careful.
It sounds like you are going to Ovulate. If you have no intentions of getting pregnant then don't have sex for at least 4 days or use protection. This disharge is called Egg White Cervical Mucous you can google it and will find out all the info on it.