periods

My first period was a few days ago. At first I thought it was nothing because I drank red cool aid but when it came again the next day I got worried so I put a pad in just in case. I live with my dad and most of my time at my cousins house so I talked to my cousin in law who said I could borrow some pads till I could go shopping for some myself normally the girls in my family start at 13 but I am 11 so freaked the heck out of me I still havent told my dad and I dont know how to but I am familiar with tamponsqnd pads .