OK so I wasn't suppose to start my fertile week till today Sunday and on Friday night I went to the restroom n I had clear mucus so I'm guessing that was my day I ovulated so I took a ovulation test and it came out negative so on glow I change my cycle to Friday ovulation and Yes to lg surge n my week flow ends today but can I get a negative ovulation test on ur ovulation day even tho ur mc was clear n stretchy but ur test came out negative