had unprotected intercourse but also bleed for 4 days?

Hi,
Welcome to ehealthforum,
Your fertility and ovulation can return back immediately after IUD/Mirena removal and you can get pregnant in the cycle after your withdrawal bleeding (if you have had ovulation and had been sexually active during ovulation time). If you develop any new symptoms suggestive of pregnancy, or if periods do not start within 10 days of expected period dates, or if you suspect chances of pregnancy, visit your doctor/gynecologist for further examination (to confirm pregnancy related changes/signs in body) and blood/serum HCG level test (to confirm/rule out pregnancy accurately). Be in regular monitoring and follow-up with your treating doctor/gynecologist and report any new/abnormal symptoms immediately. Drink plenty of water. Take adequate rest. Maintain healthy diet.
Take care.