There is no male on this Earth, who has not wished for a bigger penis. So you are not an exception. However wanting to look at surgery does make you an exception. You seem to be a dreamer. How on earth is it possible to increase the length from the 2 inches you say you have at present to 7-8 inches. Be realistic. May be an inch more.
There are many advertisement s and claims like penis pills, creams, stretching exercises, metal devices and penis surgery. None of these work. You talk about homeopathic medicines. None of these work.
The typical erect penis is usually 5 to 6 inches long with a circumference of 4 to 5 inches. There's more variation in the size of flaccid penises. Some guys are genuinely smaller than that. In rare cases, genetics and hormone problems cause a condition called micropenis -- an erect penis of under 3 inches. Sometimes Peyronie’s disease can reduce a guy's penis size.
You are still young and the penis can grow till you are 23/24 years of age. You need to seek medical help to really judge the size and treatment for your penis.
One of the safest methods is weight loss. This makes your penis look bigger. Losing weight will reveal more of that hidden shaft that's buried beneath belly fat. It doesn't actually increase your size, but it will look that way.
There a way options to increase penis size. But these are not proved to work.
The vacuum pump. This is a cylinder that sucks out air. You stick your penis in and the resulting vacuum draws extra blood into it, making it erect and a little bigger. You then clamp off the penis with a tight ring to keep the blood from leaking back into your body. The effect only lasts as long as you have the ring on. Using it for more than 20 to 30 minutes can cause tissue damage.
Stretching with weights. Weights won't add bulk up your penis, since it is not a muscle. But hanging weights off your flaccid penis may stretch it a bit. Problem is that you might have to wear a weight strapped to your penis eight hours a day for six months. This may lead to tearing of the tissue, burst blood vessels, and other problems.
Using Pills, supplements, ointments, and creams. They don't work.
Penis Enlargement Surgery:
Lengthening the penis. The most common procedure is to cut the ligament that connects the penis to the pelvic bone. This allows a little more of the shaft, less than an inch, to become visible outside the body. To prevent the ligament from reattaching, a guy would need weights or stretching devices daily for about six months.
Widening the Penis: Using implanted fat, silicone, or tissue grafts.
Penis Enlargement Surgery Risks: The side effects of lengthening surgeries are numerous and include infections, nerve damage, reduced sensitivity, and difficulty getting an erection. Perhaps most disturbing, scarring can leave you with a penis that's shorter than what you started with. Widening the penis is even more controversial. Side effects can be unsightly -- a lumpy, bumpy, uneven penis.
So, in short be satisfied with what you have.