Pregnant 4 months after d&c for molar pg!?!

I had a complete molar in March. That pregnancy was unplanned, but not shocking because we were not using any protection. After my molar they said NO NO NO pregnancies for a year! They said it is very important because I can delelop cancer. My hcg got down to 3 and I went on the pill. 2 weeks ago I had a bad neck strain and went to the ER and they were taking a long time bring my pain meds. The doctor came in looking very serious and handed me a paper that said in big bold letters "PREGNANT" I almost died! I began shaking and crying and saying they had made a mistake. My doctor had tested my hcg 18 days before and it was less than 5. My hcg was drawn again 2 days after the ER and it was at 15,000! My OB said I had to come in right away! My level was doubling so quickly he was very concerned. I was TERRIFIED! I went on Thursday to see them and the first thing they did was an ultrasound. I was prepared to hear that my molar had grown back and I needed surgery right away. I was not sure what we were looking at but the tech confirmed we were looking at a gestational sack with a tiny baby in it. She zoomed in so I could see the flickering heart. I thought I was hallucinating! How could this happen while on BC??? There is absolutely no molar tissue in my uterus at this point and so they say all is well. My hcg is doubling so quickly that I am extremely sick! I really am in denial about it still. I feel like a horrible person for not being exstatic. This is my 5th pregnancy and I have one live born child. I guess I just need time to get used to the idea because this is the last thing that I was attemping to do right now. I also feel sad for my daughter that she will have to share me. Am I totally crazy for feeling this way??

First off congrats.  I think as you wrap your mind around the fact that you're pg...you'll be happy about it.  I don't think you're crazy for thinking how your daughter's going to have to share you...but remember...this baby won't be here until your daughter's almost 2 years old...so she'll have two years with you by herself...and she'll be so young even at that age that life will be 'normal' for her when this baby comes.  Rather than think about what you feel will be 'taken away' from her, think about what she'll be getting...a sibling that's close in age that she can grow up with. 

Though I know nothing re molar pregancies...I hope everything remains stable and you and your little one remain safe and healthy.

Hi there! Congrats on your pregnancy!
Just wanted to respond because the exact same thing happened to me. I had a complete molar pregnancy and had a D & C in January of 2009. I had the weekly HCG tests and I was almost at zero, but then one week it went up. I thought to myself, oh no, it's back! But they checked for the doubling, and the numbers were right on with a viable pregnany. This was less than 2 months after my D & C! I also wasn't supposed to get pregnant for 6-12 months. OOPS! But now I have a beautiful, healthy 9 month old daughter.
Congrats and best of luck!