Cis women

Girls,I have a genuine question. I have been hearing it for some time now. We are called cis women now. What's your take on this term? Personally,I find myself offended if someone calls me that. Just because you identify as a woman,why will I have to be called other names? Never heard any trans men calling men cis men. And,don't get me started with them having period pain. I have PMOS. My period is already painful having heavy blood flow and full body aches. I saw a video them talking about how painful the "period pain" was for them after injecting hormones. And,seeing that on period, it’s actually pissing me off. Am I the wrong one for feeling this? I really respect other people’s opinions but after seeing them doing this multiple times,I am kinda losing my respect for them.