Will I get a positive test!?!?

Amy

So I had a chemical on 7th July... Iv been doing opks since the day I stopped bleeding and they are the faintest lines Iv ever seen!! Today I got a 0 on the opk but I noticed the start of some creamy/sticky/rag white cm.. 🤷🏼‍♀️ is it possible for me to ovulate and not get a positive ovulation test..? 🤷🏼‍♀️🤦🏼‍♀️