Could i be Pregnant? please read on..?

okay so i have no idea how the whole calendar method works. The first day of my last period was on march 24th i had unprotected on april 6th. Me and my boyfriend have been haveing unprotected for over a year now and i have never became pregnant so i dont kow if i just havnt had on days i am ovulating or if i just cant have kids. we do not have often. maybe once a month only. there is only one thing i noticed this time we had , i was extremely wet (sorry if tmi) it was clear but alot. i have never been wet to that extreme. it wasnt really watery a little stretchy. i dont know if anyone knows how this whole thing works. Could i get pregnant or not even worry?