Recently Tampons Have Been Painful To Use During My Period.

Recently tampons have been painful to use during my period. They hurt going in, coming out and also while they're inside. I've used tampons the last 2 or3 times I've had my period and so I know how to use them properly and I've never come across this situation. I'm using the same brand as always and the correct size for flow control.
To explain, its uncomfortable to insert the applicator even before I push in the tampon. When I push in the tampon, it feels as if there is an obstruction and I can't push it in at all. This is accompanied by shooting pains in my abdominal region. I can feel the tampon inside me when I'm doing normal activities and it is uncomfortable to sit and even walk at times. Taking it out is just as painful.