Dear friend, welcome to HCM.
it is not normal after this surgery, but is possible occasionally , if there is ongoing inflammation.
if your antibiotics are not tolerated, were u given them IV?
if you have fever
or ongoing symptoms as above, pl. get evaluated , may be an Ultrasound
of abdomen/ pelvis to look for any collection atc. around operated area.
pl. consult your surgeon and act on his advice.
take care and keep me posted.