My OBGYN said my baby looked around 9 to 10 weeks on an ultrasound scan. I thought i was supposed to be 11 weeks tomorrow. so does that mean i am only 9 to 10 weeks pregnant?

It’s possible that your baby is measuring smaller than expected, which could indicate that you are around 9 to 10 weeks along rather than 11 weeks. This discrepancy can happen due to variations in fetal growth or differences in your ovulation date. It's best to discuss these findings with your OBGYN, who can provide more context and guidance based on your specific situation.