10 week old teething?

My son has been extremely irritable lately, not wanting to nap and crying for no apparent reason. He has little blood spots on his gums, he’s drooling, and constantly rubbing his face. I asked the pediatrician Monday if he was teething and he insisted that he wasn’t, but why else would he be acting this way and why else would he have blood spots on his gums? I know it would be early, but it’d be a lot of help if someone could point me in the right direction. I think his doctor is wrong, however is there anything else that could explain this? And if you’ve went through it, what soothed your baby?