Well guys, it seems I caught a disease (I don't know what it is since my doctor never told me). Apparently, my gums are swollen and there's a lot of blisters in my mouth (Hence, the white spots). Oh well, I should be okay as long as I clean my teeth real good and use the medicine they gave me to swab the blisters. But god damn, I suffered a lot of things since November (My last visit to the doctors), and I'm very unaware of them at the moment. In fact, they say I might still be kind of sick or something since my last visit. They say the cause of the blisters in my mouth might be because I've been sick for so long, I'm not getting enough nutritions or something like that, and thus I lost about 15 pounds.
I gotta go back to the doctor's next month for lab results since I had to take a blood and urine sample. At least I now know that I didn't get Acid Reflux, Strep throat and whatever you guys listed. They tested me for those possibilities and my results came back as negative.