I am currently 5 weeks pregnant post frozen embryo transfer. I am experiencing stringy red bleeding with lower back ache and no cramps. I feel devastated thinking that this leading to a miscarriage. Has anyone had any similar experience go on to have a successful pregnancy? This is my my 5th pregnancy. I have had one successful full term pregnancy resulting in a lovely DS. Two of my previous miscarriages were after I had my DS. We were looking forward to having a child number 2. Contacted the early pregnancy unit but they have confirmed that they won't be able to see me until at least I am 6 weeks.