It has been close to almost three weeks now that I have been experiencing nausea/vomiting and it has not been fun. Somedays are worse than others and if I smell something strong, or think of certain food I feel nauseous. I've also been very exhausted, had horrible headaches, and cramping.I took a HPT but no go.Also went to the doctor on Monday, she also had me do a generic test but it was also negative. She thinks it was a stomach flu, but I'm still not convinced.
I think I might of had my AF on Monday but it was strange, light, tar-like at times (srry if TMI). I've had some brown discharge for about 2 days, then it was just a light-watery-brown slightly on the tissue kind of thing. Now I'm having a light brown gooey discharge when I wipe.
I'm really tired of feeling nauseous and strange, and I don't really think my doctor is being as helpful as she could be. (Might be looking for a new one soon)

extra notes: I have been on a new bc called Loestrin 24 for about 5 months now.

Should I retest?
What could this possibly be?
please and thanks