Is this baby gonna come early?!

Hi all! I'm due Feb. 25th (35 weeks today) with my baby boy!! I just have to ask, what are the chances I'm experiencing signs of early labor? He's been head down and dropping really low since 30 weeks! I'm in pain most of the time and my vaginal area on my sides by the highest part of my thigh are extremely sore! My back has been hurting, I'm bombarded with tons of contractions/braxton hicks everyday and sometimes those are so hard that I get this shocking sensation in my cervix & it even feels like something's trying to push out (like fluid or something)! Some of those "contractions" make me feel flush! I guess I want to know are these signs of labor trying to start? What are the chances that with this being my 3rd baby, he might be trying to come early?.. I have an appointment in 4 days but I'm very curious to hear what y'all think! .. ?