Did I ovulate?

Rachel • Therapist, wife, child of God!
Hey all! 
This is my first full month tracking everything and I'm not sure if I ovulated already or not. Here's a general idea of what my temp has been:
4/28: 97.5
4/29: 97.4
4/30: 96.9 Ovulated?
5/1: 97.2
5/2: 96.8 or ovulated this day?
5/3: 97.2
5/4: 97.05 
Help :)
4/28