Hi.
First of all, you need to educate yourself about pregnancy and risk reduction. Why are you having unprotected sex? Anytime you expose yourself to semen, you are running the risk of contracting infections, diseases, herpes, warts, etc. Your boyfriend is right.
No one can tell you whether you're pregnant just from a description of the activity. While it's rare for someone to become pregnant without having semen directly deposited into the vagina, it HAS happened. If you're concerned, I suggest you go to your nearest women's clinic or Planned Parenthood for a test. And while you're at it, you need to educate yourself regarding the various risk reduction options and choose the one that the two of you feel will work best for you.
Here are the three steps involved in becoming pregnant:
1. Around 14 days prior to your period, your ovary releases a viable egg into your Fallopian tube, and it is penetrated by a viable sperm. It's now a two-celled organism called a "zygote."
2. The zygote begins to segment, become four cells, then eight cells, etc. As it grows, it travels down the tube towards the uterus. It is now called a "blastocyst."
3. After several days, if all goes well, the multi-celled blastocyst reaches the uterus and implants into the wall, which begins to nourish it.
Voila! You're now officially pregnant.
It takes all three of these steps to create a pregnancy. Realize that there may be many times that steps 1 or 2 happen, but don't come to fruition. This is because not every egg and sperm contain viable genetic material. It's actually quite rare for a fertilized egg to make it all the way to implantation.
For more information, I suggest you visit MedHelp's Birth Control and Family Planning page at:
http://www.medhelp.org/medical-information/show/2710/Birth-control-and-family-planning
Remember that with great sex, comes great responsibility.Dr. J