Hi I am new to the forum. I am currently 18 weeks pregnant with twins. I already have a boy nearly 7 and a girl 5. So the twins will make 4. It was a shock to find out we were pregnant with twins although very exciting as well as very nerve racking. I had to give up work very early as I was hospitalised due to hyperemesis. I am still sick on and off and have aweful back ache and headaches. These past 18 weeks have been a rocky road but unfortunately I think it will only get worse as I get bigger. I am curious about other peoples fundal heights. Mine measured 23cm today at my 18 week checkup. Can anyone else tell me what their fundal height was at 18 weeks. Also what their fundal height was when they went into spontaneous labour. I am obsessed with fundal height for some reason. Thanks Kell.