Did an IUI...

So I took Femara for the first time this cycle... I did an IUI on the 30th of July because I got a really strong positive opk on the 29th... and I was just being random yesterday and used a FRER test that I had in my cabinet and got a faint positive but that would only be 5 DPIUI, is that possible or is that a side effect of Femara, also I did not trigger. I added a pic of my test... I’m super confused and I keep reading articles about possible ectopic pregnancy because the egg is probably implanted into the tube... I’ve had 5 miscarriages, never had a positive until a day or two before my period...