Can someone help

So my tests confuse me. Obviously I got very dark lines and a yes on 9/3 but I had very low levels before and slight higher after. But a no today 9/5. Did I just test to late on 9/1 and 9/2 and that’s why I got a low result? Just got my iud removed on 8/4 and have never tracked my ovulation before so I am new to this. Can the IUD cause random ovulation or does this all look normal. We had sex 9/3,9/4 and this morning 9/5. Did I catch it? I also have not had a period the 5 years I had IUD in or since getting IUD removed.