OPK Question

Denise • I am 33 years old, married, and just recently suffered a miscarriage. First round of clomid this cycle!
I tracked my ovulation using OPK this month, but I never got a surge. Going on day 5 of having sore breasts and now nausea has started happening too. Could I still have ovulated and could these be early pregnancy symptoms? AF due 9/25. Thanks in advance!!