Please Tell Me there's STILL hope....

Okay so I'm 13 DPO today.....I actually went to the night clinic last night cause I had a headache I couldn't get rid of and my boobs have been horribly sore so sore it's hard to get comfortable at bed time..and was feeling nauseated but not vomittimg...but my main concern was my stomach was horribly tight and feeling all knotted up and fluttery and the Dr did a urine test and said sorry but your not pregnant...And I was spooo heartbroken and just cried.... I'm not sure IF I still have a chance or not.... BUT I did ask her if that test she did was pretty much like one at walmart and she said yes it was just a urine test....Period is due tomorrow but late last night and alot more so this morning I keep getting this shooting pain up my vaginal area.....What Could this be...Please Tell me there's STILL hope 😢😢😢😢😢