Bent vagina?

Every time I use a tampon it slowly falls till it’s starting to peek out and I have to either take it out or push it back in because it’s uncomfortable. I’ve been sick this past week and have been coughing and every time I cough I can feel it being pushed out a little further. My mom told me that her doctor told her the way she’s shaped is different so tampons didn’t work for her so I’m wondering if I have the same problem. Can anyone else relate to this?