Need answers

I’m on cd 24 I took clomid cd 4-8. I keep having pregnancy symptoms such as lower back pain, sore nipples, vomiting, nauseous, bad headaches and neck aches , I have 7 days until I start my period and I keep getting negative pregnancy tests. Ppl keep saying that I’m pregnant that they just know in their gut but I’m not sure what to do. I also have pcos but have very regular periods. Hoping this is my month