Implantation cramping and diarrhea. My cramping was so freaking painful I really thought it had failed and my body was trying to teach me a lesson. The cramps were bad enough to make me sick. My uterus doesn’t like me on a normal day so it figures it’d act out at the start of a pregnancy. I’d say it lasted roughly a day and a half maybe a day and a quarter at the least. My anxiety definitely shot through the roof though because I honestly didn’t know what to think and if it had worked or was going to last or not again. Hopefully you’ll have much more mild symptoms than I did.