Air in Vagina

Ashley
I ALWAYS get air in my vagina and then it starts to hurt. Sometimes it hurts so bad we have to stop. It makes both of is upset because he doesnt wanna hurt me but at the same time I want to keep doing it but it hurts so we dont! :( It doesn't help that's this happens b/c we've been TTC for 5 months now and it makes me nervous about having air up there!? Help!