Sooo Confused !!!!

LaQuita
So as of today I am 34 days late. My last period was June 12. I have been having fatigue, nausea, food aversions (hot dogs ), food cravings, light headed, headaches, heightened sense of smell, cramping, bloating, frequent thirst, pressure in stomach, sore nipples(started 2 days ago) & lower back pain & 2 days ago I started having a sharp pain on the left side of lower abdomen. Last week I took 3 hpt's & they were all negative. I went and had a blood pregnancy test done Monday & 2 days later the results came back negative.. Went to the E. R yesterday and they did another blood and urine test and they both came back negative!!! I have no clue what's going on but I FEEL pregnant!!! I have 2 boys already so I'm pretty in tune with my body but right now I'm completely baffled. COULD SOMEONE PLEASE GIVE ME SOME ADVICE ON THIS?!?!