Can you check your cm and cp at work? I was reading you can get false ovulation symptoms if the egg is TRYING to release but is unsuccessful, the LAST day you have symptoms is the end of your fertile period, in saying that 5 days after ovulation COULD (not definite) also be the start of implantation (some people implant earlier/later than others). If you still have ewcm and you can feel your cervix is open I would say yes it is ovulation.
I had false ovulation 2 days before I actually did ovulate this month, it's frustrating!