1. Yes, he can be charged. The authorities are very aggressive in prosecuting sex crimes involving under-age victims. The legal system views you as a victim.
2. Much will depend on the details, including whether you and he are more than 3 years apart in your ages. Oregon law calculates this to the day. There is a world of difference between 2 years and 360 days apart, on the one hand, and 3 years and 10 days apart.
3. Both of you should consult attorneys immediately. He, in order to avoid being prosecuted as a sex offender. You, in order to handle the inevitable involvement of the legal system in your life and the life of your child.
4. DO NOT POST ANYTHING FURTHER ONLINE! THE POLICE, PROSECUTORS, AND CHILD WELFARE SYSTEM CAN READ WHAT YOU POST ON A PUBLIC SITE SUCH AS THIS.
Marc is absolutely correct. You both need to seek legal counsel in a setting where you have attorney client privilege. You likely will not be able to consult with the same attorney.