You posted previously and will be told the same answer, No risk! Secondly if he is your male Partner you and your male Partner should be tested, so you both know each other status. That way you don't have so many worries! And refering to your statement "Was there any pre-ejaculate? I don't know.(How can i feel it?)" You can sure has hell taste it though!!!!!!!!!!!!!!!!
Your chances were always "zero" irrespective of your 6 week negative test, which was negative by default, considering your no risk exposure.