Constant head ache for 6 months

I'm a 19 year old girl and started with a head ache on the right side of my forehead about 5/6 month ago. I constantly have a dull throbbing pain in that spot everyday usually first occurs when I wake up for a few hours but can return later in the day. I have also started with right sides migraines over the first past few weeks which cause severe head pain, nausea, leg weakness and I also HAVE to go to sleep when this happens I struggle to keep my eyes open during an attack no matter where I am.
I don't know if this is related but during this period I also suffer from my lymph nodes in my right armpit swelling too on and off which I have never suffered with before.
I don't like visiting my local GP and feel stupid going just for a headache but I know that I will have to go soon. Any advice or ideas what headache this could be first before I go.

Thanks a lot.

Thanks Bnot. Booked in at my GP. Have to wait 2 weeks for my appointment but suppose that's nothing compared to the last 5 months. Think I scared my self reading a lot into my symptoms. Xx