So I haven't had a period since December 17th. I've had plenty of faint line pregnancy tests but…

So I haven't had a period since December 17th. I've had plenty of faint line pregnancy tests but more negative. I've had positive ovulation tests the last three days. I've had symptoms of being pregnant. I went to the doctor and did a urine and it came back negative. Has anyone else experienced this and still ended up being pregnant?