Hi is the lump squishy? It is possible you have a CSF leak....do you have issues when you change position.....standing from sitting, or sitting from laying down?
I had tais same issue. I had To havre 4 surgeries encore i look, italien des a long jouent, i non amour feeling dithyrambique bidet issues, nothing due bécause of decompression surgery. I ended up with the dyr. Putting in muslin over my mesh surgery, its the only thing that wored, i wish you the best, and also listen to your body, and if you need to rest, rest. I know myself that me over doing didnt help to heal, i know am paying for the price now, its a long jouney, butbyou will get through it, i dont get on here very often, but i Will truc to get on here more offensive to réel in touche. Bach d'au you Will réel, your in my orateurs