Worried, Imminent Surgery to remove tumour from Small Intest

Trying to remain calm & positive about imminent small bowel surgery, but slowly "falling to peices" worried about the procedure, what I will wake up to, what tubes?  A Bowel bypass/Stoma etc.  Recovery etc. Also, been advised by hospital,  I will be transferred to short stay surgery ward 7 days plus( after being in recovery).  Worried about nasel gastro tube. 
I know I'm overthinking things, but I haven't spoken to anyone else who has been through a similar experience.