Thank you for your query on Healthcare Magic.
Strings in stool are suggestive of mucus threads or worms.
I suggest you to give stool for tests such as routine, microscopy, and for culture and sensitivity to look for presence of infection or worms.Bloating
of abdomen will occur in infections, obstruction, and indigestion
Consult the physician for physical examination and for investigations.
Hope I have answered your query.