I'm guessing, what does it mean?

Okay so when you say "gassing" you might be talking about having lots of gas, like burping or farting more than usual. This is super common for literally everyone, but it can definitely happen more around your period.

Your hormones are basically running the show when it comes to your cycle, and they can mess with your digestive system like crazy. Like, a few days before your period starts, some of those hormones can make you feel bloated and gassy. It's just your body doing its thing and getting ready for your period, so don't worry too much about it.

To feel a little better, you can try to drink a lot of water and maybe eat foods that have fiber, like fruits and veggies. Sometimes eating smaller meals can help too. If it's really bothering you, you can always talk to a grown-up about it, and they might have other ideas.