How common is molar pregnancy?

Hey guys, so I’ve been “late” for two months now. The only thing I’ve been having is small spotting that isn’t consistent or doesn’t last. I’ve taken pregnancy tests but they are negative(last one I took was 3-4 days ago). However, I would’ve been 10 weeks today, I’ve been feeling fatigue, nausea, headaches, my nipples got darker. Is it possible this is a molar pregnancy ?