Ay, that's something you really need to check with your OB or doctor agad, sis, swelling ng ari with pain especially when standing is not something to wait out, it could be anything from infection to circulation issues or even something pregnancy-related if you're expecting. I know it's uncomfortable to bring up but doctors have seen it all, walang mahiya, at kailangan nila malaman para ma-proper manage nang tama. Ingat ka, and please don't delay on this one!