My husband and I have known each other for almost 6 years and have had sex for 5 and been married for 1 1/2 years, but we've hardly ever used protection. I was tested about 6 or 7 months ago for STD when I was pregnant. It was negative. He's been the only guy I've ever had sex with but he's had 2 other before me. But my question is can we still get STD from just being with each other without protection?