CD 16 no positive opk; strange temps

Julie • Pregnant with our rainbow baby! 🤰🏻🌈🥰
Still havnt gotten a positive opk yet and it's  cd 16. My temp dropped really far and is going back up, but I didn't ovulate. I've started taking opks day after af ended. This month is so confusing. 
 I've been tracking cm too and I never seem to get ewcm even with previous months. Is it still possible to get pregnant without it? I'm so worried there's something wrong and I won't be able to conceive. 😞 
TTC 5 months, tracked only bbt first 3 months, month 4 we used opks but ran out before getting positives, this month we bought them in bulk and still havnt gotten a positive. Your help is appreciated ladies!!