Blood test/sonogram

We had our blood test at 12 weeks it said girl. We had our first sonogram at 17 and the tech couldn't decide. Well we had our 20w 3days sonogram this morning and there is a turtle for sure. We are having a little boy, our fourth! Our tech said she had never seen a blood test and sonogram that contradicted on the gender till today...leave it to our family to throw a kink in things lol. Alexander Max is weighing in at 12oz and the heart rate is 155bpm and will be here in November!