No. Bleeding while or after sex is not normal. You should contact your health provider. Sometimes sex while pregnant can hurt you baby.
In my case it caused the placenta to partially separate from uterus at about 8 weeks but was lucky enough to repair itself. We avoided any vigorous sex. A very healthy boy was born fullterm - and they called him the survivor.
I was told that having "rough" sex could cause the bleeding. By rough I mean deep and hard. The doc said to avoid it.
It's odd to me that the answers above are so "scary." My doctor told me upon my very first pre-natal visit that light spotting is very likely to happen after sex when you are pregnant because of the sensitivity of the skin in your genital area and the increase in blood-flow there. She said there was nothing to worry about, however, unless it was not just spotting, but heavy bleeding accompanied by menstrual-like cramps.
I was also told that brown spotting after sex is common, and to go by the 1 week rule. After the spotting stops for a week, try sex again. I don't have any cramps, and the first time it happened I paniced and went for an ultrasound where I found my 7 week old fetus warm and happy. If you have little polyps on your cervix, they can rupture during sex and cause spotting as well. The nurse made a valid point- brown blood is old blood. That I should be concerned when it is bright red.
Spotting after sex
is common--your whole genital area is much more sensitive and full of blood, like another contributor mentioned, and your cervix is too. The deeper the penetration, the more likely you will be to irritate those sensitive areas. If you ever see bright red blood, though, that warrants an
immediate call to your provider. And if you are EVER worried, and you just want some reassurance, call your provider anyway. He or she will be happy to help you with any concerns you may have. I also had a placental separation with this current pregnancy, and until it resolved itself, my provider asked us not to have intercourse. Things are looking great now, but we are still really careful not to go too deep, just in case. I agree with other contributors--don't worry unless you have serious cramping or bright red bleeding. And
always call your provider if something doesn't seem right to you--you will feel much better if you do.