Are my parents getting divorced?

This so weird everything has been completely NORMAL until yesterday and my mom said she was staying at her moms house and asked why and they said they were having issues and I was like asking other stuff( Over a text) then I asked are getting divorced or something she goes well we have things we have to deal with. Then I was like so you are and she said I didn't stay that and turned the subject. I know this doesn't sound like much but this is really odd because like everything was normal until this day i even heard them having sex like last week(Really Gross i know there room is right by mine) I don't know everyone is acting weird and nobody is telling me anything my mom is always crying i just don't get it because they were planning our trip and stuff 2 days ago. I'm soo confused right now I this doesn't sound like much but I don't know what to do