Pain on left side

So I don't know if this is just the left side of my uterus, or if it's my ovary, but I've been having this shooting pain on the left side, not constant, but strong and intermediate. I just had a miscarriage 4 weeks ago, I don't know if that has anything to do with it? And also my OPKs have been positive for the past 7 days. If anyone has the slightest idea of what this could be, I would be grateful to know. Thank you!