Extra Estrogen

Is anyone else taking extra estrogen to thicken your lining? I just have my first <a href="https://glowing.com/glow-fertility-program">IUI</a> and am also taking estrogen pills. I feel so bloated and crampy. Wondering if it's from the estrogen or possibly from the <a href="https://glowing.com/glow-fertility-program">IUI</a>.