I just found out im pregnant, how do i tell my parents?

Im 18 years old. Im a freshman in college and should be done with my CMA program in a few months. I have been dating this guy for 3 years and have been on the implant this whole time (got it without asking parents) and i got it removed as there were complications. My boyfriend and i had sex the week after without thinking (habit) and boom! Pregnant. My parents are very conservative, and wouldnt aprove of a baby before marriage (or sex before marriage).

I dont think i want to hide it for much longer.

How do i tell them?

I want them involved, mom might be more supportive than dad but im not sure.

Please help. I'll be 19 soon, and hes going to be 20. His parents are the same way.