ovulation?

sorry if i sound dumb. i don't use ovulation tests or temps as i think i am stressing enough. me and my OH were ttc for just over 9 years, i started to give up hope after having chlomid for 12 cycles and didnt not conceive. anyway we found out we had conceived in march but unfortunately miscarried 😢 and we have been trying to conceive since so nearly 7 months. my last 3 cycles were between 23-24 days. i started taking seven seas trying for a baby last month, my cycle turned out to be 27 days so i am now confused as to when i should expect to ovulate? any help would be very much appreciated. thanks in advance xx