STD Testing?

Next Tuesday my college is having people come out and do free STD testing on anyone that would like to come in, I'm trying to decide if I should get tested or not? I've slept with 4 people in my life and I've never used condoms. I've never shown any symptoms or signs, but I know that most symptoms don't ever really show up. I have been dating my boyfriend for 9 months now and we've been very sexually active and we've never used a condom, however he also hasn't ever shown any signs of a possible STD. Should I still get tested or does it seem like we're both in the clear? We plan on getting engaged when he comes back after being stationed in Korea so this is the person I plan on being with for the rest of my life. I just need some advice please 🙈