Becuase of long walks,you got pain in the leg
and lower part of abdomen.
Please take Skeletal muscle relaxant
and antispasmodic dicyclomine
Please add an antibiotic Ofloxacin with ornidazole
for abdominal bloatedness.
If the symptoms does not come down after above treatment,get an ultrasound abdomen .
Wish you good health and speedy recovery