I need advice!!

So, I had my IUD taken out the Friday before memorial weekend. I bleed for one week starting May 27th-31st. I haven’t got my period since. Okay so a TMI moment... last week I had some discharge that was not a lot and was brownish. I have not had it since. What does this mean? My husband and I have had sex multiple times since getting my IUD taken out but all the test I have taken have came up negative. I need some advice.