What do i do?!!!??!!!?

two hours ago i posted that i fell i was told to go to the hospital so i just got homei got an oltra sound andto me it just looks like alot of just white andblack lines but idk. the dr said that everything was ok and that i just got dehydrated an now i has to drink alots more water every day. and then he said that i was ok an so was my blessings and im confused at that point so he said that ive gained 20 lbs. in 8 weeks and in the ultra sound he saw more than one baby! but now im scared. like alot cuz idk wat to do he told me to relax more but i cant do that so now im fully awake bcuz i think im gunna hav to giv up at least one of ny vabies and i cant choose?!! what do i do?!! im 14 and idk how to handle these problems. again thanks in advance and plz no hating srry i dont think i got to the point really but its a nice... sadish story thx again plz leave thoughts and comments an suggestions!