I've been doing a lot of reading up on pregnancy and what happens after birth, and I've got to say that though pregnancy sometimes makes you feel miserable, it really is a beautiful thing. God has so blessed women with the ability to bear children and raise them. God has blessed husbands and wives with the ability to express their love physically, and we can see the fruits of love in the children they bear.
That said, I am absolutely appalled by people who seem to think that these God-given privileges are in some way dirty or wrong. Maybe it's just because during pregnancy women seem to lose that sense of secrecy, because everybody knows how babies are made. Maybe it's because it seems like the only time a woman can be completely candid and honest about what she is going through is during pregnancy, where you have to brace yourself for all sorts of personal questions from others. Or, maybe it's because I'm a Bible believing Christian woman of God who refuses to be sucked into the added stipulations some who profess to be Believers place on scripture. Whatever it is, I am compelled to speak out against those who would place others under a more stringent rule than God Himself does.
When somebody takes issue with something another has done (believer to believer), it is appropriate for the complaining party to have scriptural support for their position. It is inappropriate for the person who is concerned to simply say something is wrong without supporting it, and even worse for them to say the Bible says it's wrong without being willing to find where it is in scripture. Normally, I try to take people lightly when they can't give me scripture, and I just bite my tongue and express my understanding for their personal opinion. I get a little defensive when I see these people instigating their rules on other Christians, and using their position to strong arm them into submission for something that wasn't even wrong to begin with.
We see people who tried to force their rules on others a lot in the New Testament... Paul called them Judaizers. It wasn't meant as a compliment. Jesus was harsh with the Pharisees, and Paul had no patience for those who tried to place Christ followers back under the Old Testament law.
All we need to show that God meant human sexuality to be a beautiful example of His glory is to look at what is in scripture. God created man and women, to be together, to be fruitful and multiply. Sexuality in it's entirety (from identity to sex to procreation) is a beautiful thing within its proper context. Song of Songs is a book dedicated to the beauty of the relationship between husband and wife. References are made to the womb and children at the breast, without shame for the relation. The marriage relationship is used as an example of Christ and the Church, the headship that lies within.
I'd challenge people to search scriptures before they jump to conclusions about what is and is not permitted by the Almighty God. We are strongly cautioned not to try to take scripture and apply it to what we believe, but to mold our lives to fit what the Word lays out as a guideline. Will there be variances in beliefs and comfort levels? Of course! We are to give grace and be understanding about our brothers and sisters who are weaker than us. But we are not to change our core beliefs that are supported with scripture.