Well, only you would know if that's a possibility. I think it's time for you to visit a Dr. WITH your Mother or whatever female adult that you rely on for advice in such matters. Either your family Dr. who knows your medical history OR an OB/GYN Physician who could give you some much needed advice, especially since you seem to be engaging in some risky behavior. Take care and please take this advice too :)
they also say these could be early signs of pregnancy that's not true right?
Breast discharge is nothing to be concerned about as a rule ... unless of course it is bloody or is accompanied by other symptoms. I don't think you have anything to worry about at your age but it's never too soon to see a Dr. and learn the proper way to do self breast exams. Any stimulation of the breast may result in some type of discharge and this can be most any color or consistency. Regards ....