Any place near Megaton that would be good for me to level up? FWE made the action so very hard. I didn't anticipate this and deliberately handicapped my character with 4 intelligence, 4 endurance, 4 charisma, and dumped the rest into 10 luck. I also ignored all ranged weapons and poured points into Medical, Science, and Repair. This amounts to a level 3 character that can't kill a raider. I also use Amy Wong for her trading route, but I can't have her follow me because she will ninja my kills and experience.
So I need a good, survivable place where I can level up so that I can put something into small guns. It's at 12 right now, and I wasted perks on child at heart and lady killer for the dialogue options.
If you've got the difficulty setting on Hard or Very Hard, try turning it down to Normal. FWE was specifically balanced for play on Normal Mode, and if you turn it up, you end up with a situation where it takes half a dozen hunting rifle shots to the head to kill a single Raider, while his buddy can kill you in two hits with a broken Chinese Pistol. And if you're playing with MMM or another mod that adds increased spawns, you'll never make it.
As far as locations for leveling up, you might try the spot on the road between Megaton and the Super Duper Mart near the ruined farm house It's a random spawn location, so what you get there depends on what your game put there. Other than that there are the spawning Mole Rats south of Megaton, but those don't give you many XPs. You can speed up leveling within FWE, though. You could also head over to Springvale School, but there are quite a few Raiders there and you may not be able to handle it.
ETA - there's usually some critter spawns (at your level, mostly Mole Rats and Bloatflies, though I have encountered Radscorpions) just north of Springvale, before you reach the wrecked overpass further to the north. If you stick to the high ground just west of the ruined houses in Springvale, you can usually sneak past the Raiders at the school. Just don't get too close to the overpass, though, because that's crawling with Raiders.
Also, if you find the SPECIAL bobbleheads and you have the default settings in FWE, those allow you to tweak your SPECIAL stats, taking a point out of one attribute and putting it in another. The Strength bobblehead is located right inside Megaton.
Failing all that, seeing that your character is only Level 3, you could always start a new one with better stats and not lose too much.