Recently I've been getting really strong, sort of painful pressure in my bladder. It only lasts a few seconds, and strangely doesn't make me feel I need the toilet any more than usual. It does however seem to be triggered by me going to the toilet. Anyone else experience this, and any idea what it is?

It doesn't feel like a uti. Thought it might be to do with baby moving down further, or something?

Thanks in advance