Pressure/ braxton hicks?

Every now and then, usually once or twice every two to 3 days, I get this pressure at the very bottom of my stomach, right above my pelvic bone. It feels like someone is pushing hard, but not hard enough to hurt. It does get tight and has lasted anywhere from 1-10 mins and tends to stop if I move. I know braxton hicks can be in one spot from what I've read, so do you think that's what I'm feeling? It's been going on for about 3 weeks. I'm 26&4. Thank you!