So, based off my last period im supposed to be considered 7w1d pregs. Ive been having what seems like continuious doctor appts and not getting any straight answers, the Drs have been observing my HCG levels they have been rising but not doubling the way they would like them to, I also had a u/s a week ago (1/7/13) and they saw what they said was a "blob" but no yolk sac the dr advised me it could be too early but to still go get my blood checked to see how it is progressing. I did so and my levels went up from 3158 to 3962 she was worried and said it could be a tubal pregnancy, days have passed and i just went to the drs today i again recieved a u/s and measurments came out to the size of 5w 3d he also said he saw a yolk sac which is good and my hcg levels went up to 8400. im supposed to go back this thursday to see if the levels are growing and then to schedule another u/s. Has anyone else had this issue? Im worried sick this is my second pregnancy my first one everything was okay. My boyfriend is trying to comfort me and was actually the one who showed me this site. any help or words will be greatly appreciated.