6weeks hcg levels still rising but no sign of baby. also i've got 2rhogam shots in less than a week and lots of bleeding wat could this mean ?

Either: Too early to detect or a missed pregnancy. Time will tell. All the best.

Unclear diagnoses: Rising betaHCG levels particularly in very early pregnancy, need to be correlated with accurate gestational age and sonographic findings in order to reach a clear diagnosis and answer your questions and concern. At 6 wks , there may be a small embryo which is not called a fetus or a baby. Your obstetrical team should be able to tell you what is going on and offer you some sense of direction.