Mental disorder. For silly reasons.

Hi I have completed 11months of my marriage My husband is very sweet and innocent he has given me everything without I ask for it but before our marriage I and my sister in law had few classes due to which I don't talk to her after getting married I just made my self understand and I left everything behind what was happened with her but after few months of my marriage again due to silly issue I fought with her due to which my in-laws and my husband to was angry on me but they forgived me soon even my husband makes me understand that she is his sister and however she be in need to accept it I am in great confusion I usually fight with him due to her though I don't want to but I couldn't control myself if anyone takes her name in front of me I get hyper too I really don't want to fight with him but I don't understand y I can't control myself sometimes I think I may be suffer from any mental illness he is a perfect hubby but I can't be a perfect wife always I get hyper for silly reasons.