Generally weight support belts like the one you pictured are there to protect from hernia or other strain disorders. However if not used correctly they could be less effective or could even increase strain.

I'd talk to the doctor that reccomended the back brace, describe the symptoms as you have here and see what they have to say about it.

Maybe that's what I should do. Or just get a new brace specifically designed to control a hernia. But from what I know, a hernia never heals, right? So if there is a tear in the abdominal wall, it will always stay there, and wearing the belt will only put off the problem temporarily, or is it? Thanks.

Hernia doesn't heal well, new muscle fiber replaces old. Membranes in the area will allways be weak but they'll function. New tendon and fibrosa will grow but it will be weaker most likely. It's also a difficult area to heal because you put more strain on your abdominals than you think. Definately get checked out by a doctor. What you're feeling could be a different sort of abdominal injury, perhaps one that needs medical attention rather than a different girdle.

Actually since the past few days, I've started doing some physiotherapy on my own by looking up the net, simple exercises done by lying down which are meant to strengthen the abdominal area and also reduce the stomach fat (since I am overweight). The thing is, the problems seems to have become somewhat better. Yesterday, I didn't have a single instance of feeling strange or any slight pain around the groin. Maybe if I am careful, I won't need to undergo surgery...

Techlofer
Pain caused by I-don't-know-what or I-think-I-know-what is never good. If it goes away after a very short duration and you don't expereicnce any other discomfort or associated symptoms you may be allright. The body is very good at correcting illness and healing it's own injuries. However a lot of times short durations of pain or unrest in the body are signals of a serious issue that has not been resolved. If you see no reason to have a doctor evaluate this problem I encourage you to be paranoid about your abdominal health after this episode, and gastric discomfort or abdominal issues, anything affecting bowels or reproductive organs should be viewed in the light that you allready had a problem related to this and should be thought of as a recurring thoracic issue. Your torso contains 90% of the organ systems that will kill you if they fail, all of them separated by thin tissue walls. If you go in to see your doctor and he tells you you're being paranoid that is the best possible news about your heath and a bargain at twice the insurance co-pay.