Hey, I know how overwhelming all the changes in your body can be. Me and my close friend are both pregnant, and we waited on telling everyone because right around our sixth week, we had weird cramps too. I had some spotting, so I went to see my doctor. he said that the spotting is even normal, if it’s not more than 2-3 spots (lil ones) and then the pain is caused by your growing uterus, as it is your first pregnancy. I can also tell you that there is no force, or medicine to stop miscarriage, and it would happen if it’s meant to. All you have to do for the next while is take care of yourself, and that way your baby will take care of him/herself. Stop stressing or go to the doctor to set your mind at ease. I know it’s easier said than done, but trust me, enjoy your sixth week even with all the pain.:) Good luck with your pregnancy