There's A lot Rn

So I'm in Florence Italy studying abroad for a year and I got an iud in prep for this but within the first four days of being here it came out and I think I might've been hemorrhaging but then it turned into a normal period so it was fine now I'm back to a normal cycle (as I've been here for a month) and I had sex last night with a condom but I'm not on any kind of birth control atm and according to eve I'm fertile rn and I have a 27% chance of being pregnant??? Someone please tell me why it thinks this? It also said there was an 11% chance I was pregnant while I was having my period so should I just not trust it?? Basically just making sure I'm not pregnant 😂