5dpo and experiencing symptoms

Kiersten

Hey y’all. I’m currently 5dpo and having these symptoms: ongoing headache, nausea, backache, light cramping on bottom left side of stomach, had a small fever that comes and goes, tender breast and areolas are bigger and slight darker. I thought it was just a cold or flu starting but my nose isn’t runny and I’m not coughing. I started feeling like this 2 days before ovulation ended. Had unprotected sex 1 day before my ovulation started and yes he did finish inside of me. My period is one week away and these are new symptoms.. anyone else having these? I’m losing my mind.