Really uncomfortable, 19 weeks

Is it normal to be quite uncomfortable at 19 weeks? It’s so hard to describe how I feel, my back hurts but not too bad, my belly is also feeling super full, right, stretched out and bloated, kind of like I ate a whole thanksgiving turkey. I’m so paranoid all the time that there’s something wrong with me, I’ve been having crippling anxiety this past week, I’m not exactly sure why. But this really isn’t helping 😩 I know it’s common to get aches and pains as part of pregnancy but this is my first and I can’t help but be paranoid.