Lump in throat and abdominal pain ?

[arisotho]

I've been wondering if anyone here can help. So i'm a 16 year old female who just returned to Canada from Hawaii about 4 days ago. I tend to generally get nausea a lot due to me being anxious about pretty much everything but ever since like 3 days before I left to go home my throats started to occasionally get sore (the soreness lasted like 40 seconds) and i'd always get a feeling like I have a lump in my throat. The night before our flight I had this feeling where I almost threw up (probably gagged a bit) and that's the only time that's ever happened (as also I'm terrified of vomitting). Now ever since I've flown back I started getting abdominal pain in more the digestive region. The pain doesn't stay in one spot it moves around from just bellow my right rib to just bellow left rib and then just the general bottom of my intenstines and abdomin (occasionally the centre too). The discomfort and lump in my throats has continued and the abdominal pain is on and off followed by occasional emptiness feeling in my stomach but no hunger is there. I'm getting very worried and I even told my mum but she thinks im just overreacting. I'm just hoping anyone here can help. At this point I can't even tell if I'm nauseous or not.