Pregnancy symptoms

So my husband and I baby danced in the beginning of December and AF was 2 days late. It wasn't a normal AF much lighter and shorter. I have yet to get rid of these headaches or the nausea.. I'm debating if I should take a home test. At this point I think I'm driving myself crazy. I don't know if I should just wait until I get my cycle this month or just go to the doctor and have them do a blood test