No ovulation

Last cycle I had a clear ovulation spike altho LP was short (9 days) this cycle tho doesn’t even look like I have ovulated- last few times I have tracked ovulation successfully I seem to ovulate day 15/16 with a 25/26 day cycle. What can be done to make sure I ovulate every cycle and to lengthen my LP? I have doc appointment next week to look at blood tests done from previous cycle. Thanks.