If you play by the rules, then any exception breaks the rule. But face it, rules suck.
The writer(s) above that said you are "gay" apparently is trying to demonstrate that he plays by the rules...meaning if you have ANY sexual contact with another guy then you are gay, period. Nonsense. Those types of guys spend their lives trying to strengthen their own position by attempting to weaken yours in comparison. How curious.
You sound as though you need reassurance that you are "straight". Well, lets put it like this: since you are sexually, emotionally and romantically attracted to women, then we can conclude you are not out and out gay. Since you are so firm about everything you won't do with another man, you clearly have a preference for women (as I am assuming you will do the things you listed with women). However, I think the answer you seek lies in your own mind.
Ask yourself these questions:
1) When you were engaging in the oral experiences, were you fantasizing about a woman or were you actually focusing on what was really happening?
2) Does thinking about the experiences arouse you?
3) Could the memory of those events be utilized during masturbation?
4) Was there a distinct difference between those experiences and oral experiences you have enjoyed with women?
Those are some very personal questions, to be answered only by you. The key is honesty. The honest answers to these questions should give you a gage on what "label" you should attach to yourself.
But why attach a label at all? Its true, you may just be a person that enjoys good head or maybe there is something more...but at the end of the day, as long as you are who you are, and not what you think society wants you to be, it doesn't really matter. You said it was good. You enjoyed it. You'd enjoy it again. That's who you are.
Now go be you, because no one can do it better.