I'm on DAY 12 and have had brown (old blood) spotting for 4 days, small amounts, still got mild af pains, back ache for 2 days and headachey too, but of course trying to be very positive for my two "sparklers"!!
Don't worry when i had my first ivf i didn't have any spotting at all but was pregnant. This time i had brown spotting from day 7 after ET and have got a positive result. I also didn't have any symptoms in the 2WW at all and thought that it had not worked so do not loose hope. When i contacted the clinic they told me that it is very common to have brown spotting and then a positive pregnancy but it was the first time I had heard of anyone actually having the spotting. So don't loose hope either way it can mean a BFP