Follicles too big?

Anzel 🇿🇦 • Happily married with a beautiful little girl (2019) 🥰 and four angel babies (05/2016, 05/2020, 10/2020 & 09/2021).
I am on CD12 after 150mg of Clomid on CD3 to CD7. So far I don't have a positive OPK. This afternoon I went for a follicle scan and we saw two follicles - one follicle is sized at 25mm and the other almost 19mm. Doc said I should ovulate in two days, based in the size of the little one. 
Do you think the bigger one will release or turn into a cyst? I read mixed opinions on this - Some say that follicles above 24mm is not viable. Others say it is a good size for a healthy eggy. Now I am confused. 
Any help?