Hi Gina,
Here is some information I obtained from "Askabout.com" that might be of help to you. "There are situations where pre-*** might be especially infectious. For example, if the person has an infection then there will be more white blood cells (lymphocytes) and potentially more virus. In this case, the pre-*** might be especially infectious if it is laced with these lymphocytes and virus from the urethra. A sore throat can mean lesions and lymphocytes on your tonsils and pharynx, placing you at greater risk from the ejaculate in your mouth. For this reason, you should avoid unprotected oral sex if you are having any kind of pain in your mouth and throat, including your teeth, since this could mean a portal of entry into your bloodstream.
Go to this webside and type in your questions, it's a wealth of information...Judy
Given the question I can only imagine you are young. So please take the following advice to heart. Regardless of age that is too.
You will not and can't EVER get pregnant with oral sex. As long as the sperm stayed in your mouth it can't make you pregnant.
You will not and can't EVER get pregnant from anal sex. That is if that is all you do. Now if you have anal sex and then he inserts inside of your vagina after that you have two risks. You risk getting a infection and getting pregnant.
Now, we know this to be true. In order to get pregnant you have to have sperm get inside of your vagina for it to travel to get to the egg and fertalize your egg.
Suggestions for you to adhere to for your own personal safety. You should ALWAYS take advantage to ensure your personal health and your lifestyle.
1. Always use a condom. This will help reduce the risk of pregnancy. This also helps reduce Sexually Transmitted Dieases. Things such as HIV, NGU, etc.
2. If you will becoming sexually active you need to talk to your partners about STD testing. Include questions for Herpes as Herpes is not a standard STD test. It is something you have to request. If your partner doesn't have a STD test that is 6 months beyond his last sexual encounter tell him/her to get it before considering the act. Even then take your precautions.
3. Ensure that you talk to your doctor about birth control if you are going to have unprotected sex. If you will have that please be aware that NOT birth control protects against STD's. So you will NEED to use protection to limit the risk of pregnancy and STD's.