I use the NuvaRing, which I took out on Tuesday last week (so just over a week ago). On Friday night DH and I had unprotected sex. On Monday I started a very light period (last month was similarly light - tested then and was definitely not pregnant). I am still spotting/ bleeding (brown blood). Today I realised I had forgotten to put a new NuvaRing in, so it is about 36 hours late. Can you please reassure me I am not pregnant? How long will I have to wait to test?