What does it mean if I am spotting during the first trimester?

What did your OB say. Any problems like this need to be directed to your OB and if u have not gone for care i would do that asap, spotting can be from the cervix , or form inside the uterus u could be trying to miscarriage or u could have a small blood clot behind the placenta called a retroplacental hematoma that usually resolves, if u are spotting then no intercourse and see your OB for an exam and ultraosund.
Possible miscarriage. Any bleeding during the first trimester should be investigated with an exam and an ultrasound. It may just be implantation bleeding, but it could also be a miscarriage or an ectopic pregnancy. If you are rh negative you may need rhogam, so please see your obgyn for a full evaluation.