first time ttc

so on Feb 7th i removed my skyla iud i had it in for about a year and couple of months i got a period 14th-18th had been having unprotected sex since the 20th as you can see the hearts even on my fertile days yesterday i took a pregnacy test and came out negative what do you guys think ? on the glow app i have it says my period is 5 days away and says low risk pregnancy and this one says on the 18th would it be to soon to tell or ??? 😒😒😒