3 days late arghh!!!!!

Staciee
Someone help please!!!
Ive never been late on my period before but now im soon to be 4 days late!!
Had period pains for 2 weeks but no blood!
Went to hospital last night and have a urine infection which ive never had but he said this would affect my period coming.....im going crazy negative test but no period....
Anyone else had this and found out they were expecting????😱