Iud question

Katt

Had the iud come out on the 20/02/2020. Had first period on the 23rd. Lasted 5 days. Had sex around the time ‘ovulation’ occurred. Apparently. I have done pregnancy tests one was faint line and others no. Headaches dizziness sore titties. Lower bk ache not loads. Nose bleeds a little. Constipation. No sign of af yet n negative tests 🤷‍♀️ I’m confused. Any insight or help from anyone who been through same would be great