Ovulation without positive opk?

xoxo

Hi is it possible that you still ovulate with no positive opks? I've been testing since CD11 (I am 30 days -32 days cycle) n I've only gotten really faint lines. According to glow I am ovulating tomorrow. But nothing! And not much CM! My husband is going away on business trip next week and I am just keeping my fingers crossed we BD enough. Anyone got pregnant with negative opks/minimal ewcm? Thanks ladies x