Still pregnant after...

In october I made the hard decission to have an abortion at 7 weeks pregnant. Well 2 months later I found out i was pregnant again, or so I thought. I went to the doctors and had an ultrasound and was told I was 15 weeks pregnant and it was a girl! They then sent me straight to the hospital to check everything out. I never thought this was possible after a suction abortion. The hospital said either I was having twins and they only got one or it just didnt take. I have looked into this place i had it done at more and am finding out not so many good things about it and am finding out this happens often to people to come there. So there i was crying and scared because I wasnt sure what excatly was going on and kept telling them its not possible, i had an abortion and was told it was completed. Now I am 25 weeks pregnant and was told shes healthy. Shes kicking alot. But my stomach just doesnt feel the same. when i am standing or sitting i look big but when i lay down my stomach gets smaller. I have 2 other young children and was never like this with them.

But my question is, do you think she will still be healthy after having something like this done? I keep reading that some people when this happens dont carry full term. Is this true, that when this babys you dont make it full term? Its slowly getting closer and now im getting more scared and all I keep thinking about is the baby going to come early, what is going to happen to her since i had this done. I regreted the abortion the second i had it and will never do that again. I just need some more information as to what to experience when this happens

thanks