Not to be disrespectful or disgusting ...

Anti
Everytime My Cycle About To Come On I Get VERY Sharp pains in my butt  ๐Ÿ˜๐Ÿ˜– it makes me jump n I continued to have them while its that time of the month . Whats causing it ? How can i stop it? ๐Ÿ˜ฉ๐Ÿ˜“