I had significant pain on my right side starting around 4 weeks with DD3 and convinced myself it was another ectopic - had one in my right tube 12 odd years ago but didn't lose the tube. Ultrasound prior to o'ing so I knew I o'd from the right ovary.

The nurse at my FS said that sort of time was usually too early for pain from an ectopic, and said it was more than likely pain from the corpus luteum, exacerbated by the hormones I was on. I still stressed about it until the scan at 7 weeks, but fortunately confirmed all good. The pain was severe, particularly when I was stretching, rolling over etc.

Maybe give your clinic a call and just run it by them. Good luck.