Anyone implant on 4 days after ovulation

I am 4 days past ovulation (yesterday) and last night I had very bad cramps. Like a heavy intense period was about to start. It is way to early for that and I am not bleeding. Positive ovulation test on June 10. Could this be implantation I know it is typically after 6do but I have read other women implanting early. Any comments are appreciated!

Vote below to see results!