NA!! Don’t check till 3rd date. It’s a pain and 99 percent of the time its fine. I went out with many a girl and yet to have a problem. Chill out, your right you have nothing to lose, but nowadays people go out so much, why go crazy. If it gets past 2 or 3 then check.
Small note, because it is such a rarity to be a problem, some guys look at it negatively when asked before first date. I personally don’t care either way, but some guys will think you are the ‘overbearing’ and super health conscious type’. Now, yes I know I’m going to hear all you mommy’s (and I can prob predict which city your from. . .) reply with the following; “But its a health thing and therefore I will do what I have to do. Period.” To you I say, work on yourself and next time davka wait till 3rd date before asking. It will be very good exercise for your (psychological) health. Hatzlacha!!