Do not pay attention towards your sysmptoms. They are mostly misleading and do not mean much in reference to HIV. Your test is the only way of knowing your status.
You were at the risk. Unprotected vaginal or anal sex are the key sexual transmittion routes. Your 6 weeks test is reassuring because it changes very rarely after this period, however it is not conclusive and to be 100% sure about your status, you have to go for a follow up test after another 6 weeks.