HELP!!!

about mid august, i miscarried. before i found out i was pregnant, i was very emotional and could cry over anything! and my breast were so SORE. but after our miscarriage, my doctor told me we could start trying again as soon as bleeding stopped. well, i got a positive ovulation test last tuesday and a negative on wednesday so i’m guessing i was done ovulating.i’m getting to where i can cry over almost anything again. do you think i could be pregnant again, or do you think it could just be depression from wanting a baby so bad??