If a woman is in early stage pregnancy and believes she miscarried because of some bleeding and no signs of gray matter, she never had a d n c or went to the hospital, can she still be pregnant? And if she did lose it and got pregnant again, what can happen to the new baby and possible infection from miscarriage?

Yes, she still could be pregnant, since she never confrimed that she had a misscarriage, so she may have been wrong and did not have one.

If she did, and got pregnant again, there may be no issue, or there may be many problems, only a complete exam by her doctor will show that.

Pick any possible answer, from great to terrible and any and all of them are possible, with the very little information you have provided