how do I know the difference

Lori🤷🏾‍♀️ • Positive vibes only!!! But I am the one if you choose to try it😉 everyone has their own opinion 🤷🏾‍♀️
I am having really really really bad pains in the bottom of my belly. my stomach is getting so hard I have to stop and bend over just to get the pain to ease up. Walking almost kills me in the grocery store . I'm due in 3 weeks my mucus plug has dropped and I have my every week doctors appointment on the 25th I cannot sleep comfortable at all now last week I cried because I was only getting about three hours now I'm up til 6 in the morning and napping on and off throughout the day. I just need to know what's the difference between braxton hicks and real contractions because I wanna wrip my head off at this point with the pains. I'm like the meanest person once they hit me. I cannot get anything finish from cooking to cleaning to shopping to even sitting up playing with my toddler. I run to the bed just to stretch out and keep the pains down