First failed ICSI in May. Did a month of monitoring afterwards, not expecting to change much on the protocol as everything been relatively ok. last month womb was around 6mm and dr attempted to do an endo scratch but my cervix wasnt letting her in. Dr wanted to monitor again this month only for my womb to be only 3mm thick! It has always been on the thinner side between 5-7 but never 3. I am ovulating fine every month but lining is thin. I asked if it was due to being on the pill for 10 years and she said no. looks like im going on oestrogen from day 2 of next cycle to see if this works if not then its oestrogen injections. She has no idea why womb is playing up but its worrying to see. Issue was with male side but now it appears I have an issue too. its very strange since this month I started taking well woman pre-conception. I stopped taking them after I saw dr as you never know it may be having an adverse reaction. just want to get on with the next cycle. anyone had 3mm thin before?