Mild Fatigue, pressure headaches, eyes feel weird

Ok i am an 18 year old male and i am very worried that i could have a brain tumor. At the end of the summer i started to feel mild fatigue but did not think anything of it. I used to smoke weed everyday basically all summer and i now have stopped. Its been about 3 weeks and last week i started to feel a little weird in my head. I do have a soft swollen lymph node behind my left ear and i went to the doctors a few days ago and she told me that i had an ear infection. I was prescribe antibiotics. I did not mention to her that i have been feeling very paranoid lately and that i sometimes get pressure headaches. Over the past few days i have been feeling very weird in my head, my eyes have been a little blurry, and sometimes when i wake up from sleep the left side of my body almost feels numb. I will pinch myself to make sure and i can definetly feel the pain on the part where i feel is numb. I feel weird when i walk. In the morning i do not have bad headaches, but i do have them and when i do during the day they are pressure headaches. I do feel nauseous when i have them sometimes, and my face becomes very hot. I feel like i have also been short of breath and i can also feel my heart beating alot. I tell my parents and they dont think anything of it they just think its all in my head and they think i am having anxiety attacks. I have been very paranoid lately, but it is not normal for me to feel the numbnewss i do when i wake up. I am worrying myself sick and i dont know if i should go back to the back dotctors. The doctor told me to come back id the bump behind my ear ets any bigger, which it has not. So am i just having anxiety attacks that are not very serious, or should i be very concerned and make another doctors appt?