7 weeks 5 days pregnant

Today is Monday I took a few sips of a juice that was expired (I didn't know it was expired) on Saturday and my stomach started hurting so i went restroom and i had diarrhea but it continued to hurt like when you get an upset stomach Sunday morning went fine then i drank a blueberry juice (brand new) I drank it half ways but it started to make me feel grossed out so I stopped drinking it then around 6pm my stomach started hurting again like a stomach ache so I was (TMI) trying to go #2 but I'm assuming I was constipated because I couldnt for about 5 minutes felt like I was going to push the baby out it hurt so much but there was no bleeding n then I had Horrible diarrhea and then I went to lay down but as soon as I layed down I had to go restroom again so I did n then I waited 5 minutes n I threw up all the water melon I ate.

Question is should I be concerned I have my first doctor appointment on Wednesday the 14.