Hard lump just under ribs

Hi all,

I had diep flap 2.5 weeks ago & recovering well. Since surgery I’ve been feeling very tight at my upper abs, just below my ribs. I was told by the physio.l that the surgeon has stitched all my ab muscles to make them tighter.

The tightness has continued & I’ve had a bit of a feel & have discovered a hard lump under the skin. Worried it could be an epigastric hernia.

Had anyone had this afternoon surgery and, if so, can you give me more info. About what it it feels like & what I should look out for.

Thank you

Had an appointment today to get it checked. Been told its scar tissue so nothing much to worry about