And the fluid is precum, not premature ejaculation. It is perfectly normal. This fluid cleans out the urethra to correct the pH to be correct to keep sperm alive. Relax! You are normal.
You sound completely normal. It is understood that porn stars are of unusually large size, so watching porn makes men feel like they do not measure up. Actually the average size is between 5 and 6 inches, and women have been polled and most women prefer average size. Some women are larger and others smaller, especially before giving birth. If your wife is average to small, she will be thrilled with you. If she happens to be large, then a bigger male might work better for her just as a smaller woman would work better for you.