TMI TMI TMI but I really hoping someone can relate

Ta
I'm 5 weeks as of today and yesterday evening I started the worst case of diarrhea I have ever had. I'm literally running to the bathroom every 20 mins and it feels like I am peeing out my butt!!! (So sorry for be graphic) and it's even the color of urine. This continued into today all day long. I called my dr Bc I'm so scared this could effect the baby and she didn't sound to concerned she just said this could be very normal for early pregnancy due to level of hormones or change in diet. If I felt like I was in need of emergency care I need to go to er. Which made me feel like this wasn't serious. But this is continuing into tonight now and I feel like I soon as I take a sip of water I'm running to the bathroom and it's coming out. Anyone else experience this? Did it effect the baby at all? Please someone with input or someone who experienced this put my mind at ease. TIA.