If you haven't started your period it's possible. Those aren't enough symptoms to think you could be either. You should get a reliable answer from a test at this point.
I've done a test three days ago but it was negative
I'm going to do a blood test today
It's my third baby after two girls and I know that may be the HCG isn't high enough to release a positive test and it's early to know if I'm pregnant or not
Till that day I'll wait