Located in US, but Battlelog is only displaying EU and Russian servers

Go to Battlelog and click on Multiplayer tab. In search options, uncheck whatever location settings are chosen and, depending on your preference, either check North America or click on Custom and select whatever countries you want.

Aside from that, I would still recommend trying to get through to EA Help in order to get the security question back. I mean, without that you're at hacker's mercy in terms of being able to log in at all (plus, for example, he might cheat in-game on your account and get you banned).