Contractions? Or labor near??

So far all morning I've had stomach cramps like I have a stomach bug but I don't... it cramps up then stops. They don't cramp up for long like 10-15 seconds and then stop. And before that my lower back was cramping like period cramps....I have an appointment today. But I have read that this is how some contractions feel to start off. So I don't know. But I have been super nauseated and just felt like full blow crap this past week. Anything I eat or drink makes me nauseous and had cramps later. And I have been having loose stool too. I'm just over this pregnancy, don't get me wrong I'm blessed to be pregnant and that this one was a breeze compared to my first. But im just so uncomfortable and tired and tired of feeling like crap lol.