Period help

tiffany

Hey girls I have a slight problem I am hope someone can help me with. I an 15 and have been getting my period for about 3 years over the years I have became more irregular I had my period 2 weeks ago and I think I am starting again and they r not consistent 1 time.i will be really light and the next time it's all I can do to not fill a super + tampoon In 2 hours do y'all think birth control would help if so which 1 should I look into and side note this may have nothing to do with it but I have became sexual active in the last 3 months