5 DPO possible symptoms. May be TMI

So last 2 days i have had headaches and diarrhea. I had urine and blood tests and I'm not sick. However a gf said at 3dpo she had similar symptoms come before she got her positive test at 11dpo however she did miscarry at 9 weeks. Anyway i just want to see if anyone had these symptoms and got a positive test? My gp said its possible but still waiting 10 days (af due) before i test........