Needing advice on symptoms and sickness

I am a first time mom. I’ve never been pregnant. I’m 6w1d and so far I’ve had very minimal nausea. Earlier in the evening right before I left work I started to feel pretty crappy. Nausea and a head ache I chalked it up to morning sickness, obviously. I came home and laid in bed and felt even worse. My whole body hurt and I felt really sick. I sent my boyfriend to the store to get me a watermelon because it was the only thing that sounded half way decent that I thought I would be able to stomach. After I ate I felt a little bit better and we went on about our night. The watermelon has since caused diarrhea! I know what you’re thinking, watermelon?! Of all things, right? But anyways, now it is 2:40 in the morning and my lower back/ hips wake me up with horrible pain. I tried stretching and walking to loosen them up and neither helped. Do I need to see a chiropractor today? Or is this just part of early pregnancy? I’m still feeling really sick and crappy 😣