I have follicles 22mm and 18mm will I def ovulate?

💞SuE💞 • 39/ TTC#1 4 rounds of clomid at 25mg. 1 round of ivf/fet failed dec16. 2nd round fresh failed 14feb17. fet in april17
I took clomid at 50mg and have 4 follicles on day 11 at 22mm, 18mm, 15mm and 14mm and growing. Now, do follies ovulate for sure when they reach a certain size? I suffer from inovulation for the last year, but I read somewhere that at a certain size they do. Also, if so, when will I ovulate? when I was regular my periods would come between 32-36 days  but always come and this year due to pcos they've been 40-70 days and a mess. Now, will clomid can everyone guess when I will have it? I did an ppl everyday this week and they don't look too good yet. Help!!!!