AM I JEALOUS? please help its throwing me off?

So whenever I see my husband's cousin's wife always feel bad, like something is squeezing my heart. Now she is a GORGEOUS girl so I have always associated this feeling with jealousy, now I rarely see her but when I do I feel bad. But when I thought about it, I have of gorgeous friends and I when I see them I feel great! Yes the first time we met I felt like Wow but no bad feelings AT ALL. So do you guys think it's jealousy or something else. And if it is, how do I change that?

P. s, I am pretty, and very proud of my intelligence, so I am genuinely a very relaxed confident person
AM I JEALOUS? please help its throwing me off?
Post Opinion