two periods now pregnant

ni

I just found out i was pregnant a couple of days ago but i was looking at my period tracking calendar and realized i had 2 “periods” i assume in june and i wonder if the 2nd one was an actual period or possibly something else??? and wether to go by the first period or the second when asked when my last period was bc the month of june my periods were abnormally long. usually only 4 days but the 1st lasted a whole 7 days and the 2nd was 6