Is a 14: 36 min mile okay?

Now before your like "No, that's like a grandma mile" I have improved much. last time for gym I ran a 22 min mile ( jogged like maybe an 1/8 and walked the rest ) Now, I ran about 2 whole laps at a pace of 5mph, and jogged about 1 1/2 at a pace of about 3MPH and walked the rest.