I am very sorry to hear of your positive status. I have researched some information for you, regarding your situation.
The cdc confirm that it is possible for a baby to become positive through its mother. The risk of this occuring varies, depending primarily on the viral load in the mother's blood and what stage the hiv is. 60- 75% of babies who become infected do so during labour and delivery.
Things to consider:
1. The cdc reccomends seeking medical care as soon as pregnancy is known; retroviral drugs, which suppress hiv can lower the risk of transmission to the baby.
2. Breast-feeding carries risk
3. A caesarean section to deliver the baby reduces risk of transmission during pregnancy
4. All babies carry the hiv mother's hiv antibodies (created by your body to try to fight the virus) during pregnancy and after - which means that the test which detects hiv antibodies will be positive for every baby when it is born. This does not neccessarily mean that the baby is really hiv . Over the first year of the baby's life, further testing is carried out.
5. Most babies do not become infected with hiv fomr their mother.
6. Research has shown that hiv pregnant women are at no more risk of ill health than hiv- women because of pregancy.
Whether you choose to have a termination is entirely your decision. I reccommend you discuss all your issues with your doctor. You should also talk with him about your denial problems, which must be dealt with.
My thoughts are with you.