I have lower left abdominal pain that comes and goes has been happening for over three days. The pain is sharp and goes on for about an hour.?

Ovarian. A very likely possibility is your ovary...If you're 5-15 days past your last period, ovulation can cause pain, or a lingering ovarian cyst. This is just one possibility though so go get it checked out promptly if it gets worse or doesn't go away!