Under the skin pimple - 6DPO. Help!!!

I'm 6DPO and two days ago I got an under the skin pimple under my nose but above my lip. I've NEVER in my life had this before. I mean I've had some pimples and maybe once under the skin but it wasn't bad. This one is AWFUL and it hurts so bad. It's so swollen I can't even smile on that side and it's causing my lip to be pushed down when I'm not even smiling. Has anyone else had this before? Could this be a pregnancy sign? How do I get rid of it? I've put tea tree oil on it and held a warm black tea bag on it. Ugh! This sucks. Please help!