That you were religious should not have stopped you for taking part in sexual education. I would even go so far as saying that would even have been a good reason to take part.
Unfortunately people calling themselves religious ( just meaning they are very conservative ) think that sex is something which you do not talk about.
Sexual education should also be about feelings, love, sexual desire, how men and women often think different, how to NOT get pregnant, know your body.
How to avoyd hurting your partner´s feelings and also that a NO is a NO.