yea its normal..dont fret. It happened to me a couple times with my bf suckin on me. didnt seem like he was doin it wrong just AFTER! i was like wat????? lol it went down after some hours tho. 2nd, 3rd time i realised that friction and excitement is the case... excitement cuz it only happens wen we havent seen eavh other in some time.
Dude,
If done properly, clit sucking can give so much pleasure to a woman. I've been doing it to my gf and she enjoy's it a lot. however, make sure your teeth don't rub too much on her clit. just use your lips and tongue. and don't suck to hard. just enough to give that sucking sensation.