Side effects after iui

Did anyone get put on estradiol after <a href="https://glowing.com/glow-fertility-program">iui</a> and experience side effects from it? I don’t know if it’s the pill because ever since i took it first day after <a href="https://glowing.com/glow-fertility-program">iui</a> I started to feel nauseous and it’s everyday a headache here and there. Do these pills give off pregnancy symptoms? I just feel uncomfortable it’s weird