My doctor said that sex is perfectly fine during any part of your pregnancy. Just sow down with the wild rough monkey sex. Lol =]
sex is actually good for you soo they say it speads up labor. Well not exactly the sex but the climatic moment contracts your cervix and helps..
But yea we aren't doctors here so if your still uneasy about it then ask your doctor about it.
I'm pretty sure it won't do any harm.