Men, do your ladies a favor. Encourage them to tell you what they enjoy. If you care about your partner please learn to enjoy oral. (Most)Women are multi-orgasmic and it's communication and cooperation that leads to some really, really fun time in the sheets. I personally love to give women head but each woman is different.
Find out what they like. You need to be attentive lovers. Pay close attention to her reactions, some women are very sensitive until just prior to orgasm. Some are game for you to go full on tongue lashing from the start. Try to feel her responses and read them appropriately. If she's bucking you as if she's ticklish then she IS ticklish, this does not mean she's going to stay that way when she gets further toward orgasm - rather that you need to further stimulate her prior to focusing on her clitoris. Try to keep in mind that a lot of women need to feel very comfortable in your efforts to really relax and enjoy your efforts. This can take time to establish and communication is key to get to this point! This doesn't mean you need to ask her every 10 seconds what she's enjoying... This means you need to learn to read her. Every hip thrust, every moan and every gasp gives you more information as to how she is feeling. Read her responses to your stimulation, remember what doesn't make her ticklish and what makes her tremble. You don't want her ticklish If she's squirming under you then you're probably tickling her and that's not pleasure. Tickling has been linked to training children in self defense, it seems fun but it still ends in them convulsively bucking and even sometimes hitting you away.
If she's cooing and rhythmically humping into your attention you're doing it right.
The last and most important advice... DO NOT STOP once she's started cumming! Unless she asks you to stop because she's become too sensitive then keep right on doing what got here there in the first place! You'll find that you can take her breath away for a very, very long time if you keep at it. The best part is that after you learn what she wants you can bring it on faster - which means less work for you and more pleasure for her.
Bottom line - learn to pay attention to her non-verbal queues.