Join Multiplayer BF3 on PC

Hey guys

i just bought this game yesterday for PC. i owned it for PS3 before.

after the installation it installed origin, then updates and then i entered the code of the battlefield 3 premium membership. it loaded a long time and i interupted it for going to bed.

this morning i wanted to resume the download but i do'nt find where i can do this.

eighter i can't start the multiplayer. i think it wants to start my PS3 game...

thanks for help and sorry for my poor english...