you need to wait. if you have only had your period for 4 years you are young and you really need to wait. go to college. get a degree....GET MARRIED. then try for a child. you might not be with your boyfriend by then
check out wid a doc for better knowledge....
well believe it or not it's all timming your sex right when you are ovulating.(thick discharge yolky texture)BEST TIME.And even then ,sometimes it can be his sperm,it can be your not ovulating,it could be lots of things.Your best bet though is keep trying for a year...5 months isn't a alarming time to of not gotten pregnant yet,after that seek a doctor to give ya something to better your chances.