Alright my ladies who've went through labor!!!!!

So today I noticed some mucus plug/discharge that had a little tiny bit of red blood in it. Ok, so I've been losing this damn plug (whatever) for weeks now. Well today I started getting the pink/brown and that little bit of red (tiny amount) of discharge. Now, I'm starting to feel contractions tightening my upper stomach that actually make my stomach feel like it's on fire? They also feel like bad gas pains. On top of all that I am having back pain. Water hasn't broken (obviously) and I know that it's kind of rare of a woman's water to break on its own. Is this the beginning of labor FINALLY?!?!?!?!?! I am 40 weeks in 2 days!!!!