Weird symptoms... TMI

Ok so I wasn’t even thinking possibly pregnancy until today. Since Saturday I’ve been experiencing diarrhea accompanied by lovely nausea. Today the nausea was like so close to puking but instead it turns into diarrhea. I honestly have never in my life had it last this long.. so then it got me to thinking... is that a pregnancy symptom? Let me know if any of you experienced this in early pregnancy. When I look on my chart it is guessing I ovulated on the day my husband and I ironically made love. Wasn’t planned, I just noticed that today. However I have PCOS so my chart can be wrong as to when it predicts ovulation. I took a test tonite with urine that was held for maybe 2 hours and there wasn’t a line, but according to my app I’m 11 DPO so maybe too early? Idk I think I’m just holding onto hope that the last month of the year might just bring us our rainbow baby, but it’s hard to hold on to hope when you haven’t had much success. Let me know if you’ve experienced this