Welcome to the forum. The title you chose for your question says it all: You are WAY "overly concerned". There is absolutely no risk of any STD from the events you describe.
Kissing, mouth contact with any part of the body (except genitals), and hand-genital contact do not transmit STDs. You did not need testing for STDs, but your negative test results are reliable. Had any test been positive, it would mean you have had some other STD exposures not described here.
Oral herpes due to HSV-1 is not considered an STD. Sure, you might have been at risk from kissing an infected person, but that could include social kissing of friends just as well as sexual (open mouth) kissing. The lesions you describe on your lips don't sound like herpes. Anyway, half of all people have oral HSV-1, mostly acquired in childhood -- so you might already have it, unrelated to the events described here. Of course if you continue to have oral lesions that concern you, visit a health care provider for diagnosis.
Here is all you need to know about heterosexual activity and STD/HIV risk: If a bare penis (i.e. without a condom) is not inserted into another person's vagina, anus or mouth, there is no risk. Here is a thread that discusses the biology of STD/HIV transmission, which will further explain why you were not at risk. Start reading with the follow-up comment dated December 14:
http://www.medhelp.org/posts/show/1119533
Regards-- HHH, MD