Ok so I had my IUD removed on 5/29.  We had sex on the 30th and on the 7th.  My period is 5 days late so I took the First Response pregnancy test last night and it shows positive.  I took another one this morning and it shows the same.  My last period was 5/15, so according to glow I wasn't even fertile on the days we had sex.  Is it possible these could be false positive?  Have any of you had this happen?