Im 6 weeks pregant...?

Ok so i found out just recently that I am pregnant, I think 6 weeks, but I havent been 2 tha docs yet bc my appointment isnt till next week so I dont kno 4 sure I just took like 10 different hpts and they all came out +. Anyways ive been super paranoid bc I had sum nurse ist told me that I probably woudnt carry full term bc she said that it happens 2 women under 5 feet. ( Im 4'10, 100lbs, 23 yrs old ) but i have never heard of this and this is my 1st pregnancy and sounds really stupid but i keep thinking about it and its making me think that im going 2 have a miscarriage! Is that even true?? I know my mom have a few m/c and she's really short but i dont think it was bc of that...O and my symptoms havent really been that bad, the only thing that I have is sore and swollen bbs, sumtimes slight cramping (scary??) and I dont like alot of the food I used 2 eat and i get tired alot. But i remember it being alot worse at first... Ive been taking hpts every few days bc at 1st the lines were really faint but since then they have all been super dark. good thing? please any advise on this would b cool.