When posting that kind of thing on social media, think beyond your peers.
You said you are graduating soon. Do you have a job yet? Whatever you post on social media, future employers can potentially find the information when they look up your name. People can also find you through your peers on Instagram. I don't know whether or not you have it on private mode, or if you use a pseudonym. Even then, anything's possible. Like your peers can tell other people what your name is on Instagram.
In any case, just consider whether that would be a good, bad, or neutral thing. Would you feel comfortable if the information went beyond your peers? I don't know about your life, so I cannot tell you.
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Life ... that's what leaves the mess. Mad people everywhere.