Took mini pill 3 and a half hours late

Hi eveyone. This is my first time using mini pills. I’m 5 months postpartum and got my period back at 3 months. Doctor put me on the mini pill because I am breastfeeding. I’m aware of the 3 hour window but took my pill at 10:30pm instead of 7pm. Husband and I did have sex twice today. I will use a back up method for the next 2 days ( that’s what the pamphlet says). I’m just worried because we already had sex before missing the pill. Will I get pregnant because of that? I’m super anxious and already considering if I should get an iud.