Help!! Thailand visa!! 6 weeks...?

You have nothing to worry about if you plan well. If you are visa exempt like you say (based on your citizenship) you are visa exempt for a period of 30 days if you arrive by air and 15 days if you arrive at one of Thailand's border crossings. You can leave Thailand and come back as long as you don't stay more than 90 days in Thailand over a 6 month period. Just plan well and remember the rule about 30/15 days visa exempt status. Also as long as you have a return ticket it doesn't matter how long you stay in Asia. In most cases no one will even check that except sometimes the airlines when you first check-in..