Hi, i just looked in a pregnancy book that ive got and it says;
"Cramping during and after orgasm and sometimes accompanied by backache is very common and harmless during a normal, low risk pregnancy. Its cause can be physical: a combination of the normal increased blood flow to the pelvic area during pregnancy, the equally normal congestion of the sexual organs during arousal and orgasm and the normal contractions of the uterus following orgasm."
Also i found another bit "Although the uterus does contract following orgasm and these contractions can be quite pronounced in some women, lasting as long as half an hour after intercoutse, such contractions are not a sign of labour and pose no danger in a normal pregnancy"
Hope this puts your mind at ease :)
I was definitely having pains/cramps then. Mine started in the sixth week and lasted until a couple of weeks ago (I am eleven weeks now). When I was having the same problem, I did a google search and uncovered several websites saying that it was completely normal to cramp right after orgasms and not to stress out about it. I chose to refrain altogether because of my own personal fear (which it sounds like you are doing also). I wish you the best. Try not to stress out about it because this is not abnormal. Best wishes!
I've never had that happen but if the pain doesn't go away I would get checked just to be sure. Don't worry about miscarrying, just do what you'd do if you were having this pain regardless of what you feel caused it. Sex is normally very safe during pregnancy, so just give it a few days and check with your dr if the twinges/pain don't subside. Good luck to you!!! I'm 8 weeks preg myself! ;)
I remember sex being uncomfortable for me when I was pregnant sometimes too. But, I have also had a m/c before too so I understand your concerns. I would probably call and speak to the nurse, she can speak to the doctor and let you know if you need to come in or not. At least it would put your mind at ease.