Hi, my site got like that, I phoned bc nurse and went to see her next day, was also painful, she took it out and said it had failed , it was about 9 days post op, when she took it out sounds horrible but loads fliud came out after, all over floor, me her. It shouldn't leak , worth getting it checked plus leakage could compromise your skin and healing, hope you get it sorted. Ps doesn't hurt coming out well didnt hurt me, bit of relief to be honest, did have to have site drained once after this about 3 days later approx 150 ml but ok since x