cramping after ovulation

hi i got my peak ovulation on sunday, but since wednesday iv been cramping in my left side and have a bloated tight feeling and it hasnt gone. i know its way to early for implantation, its just iv never had these feelings before. i used preseed for the first time and used the digital ovulation stick so i knew it was definitely the right timing (turns out i ovulate a couple days later then the app says, so iv never actually got the date right in 3years of ttc) anyway..im wondering if anyone has ever had a positive from these symptoms or even just an idea as to why i haven’t stopped cramping the last few days. thankyou in advance