Help, I'm going round the bend! I used the cheap OPKS with no issues for my first pregnancy which ended in M/C at 8 weeks. The second time round it was harder to pinpoint my O date because it always seemed LH levels were detected. I decided to get the Clearblue Advanced Strips to be more sure. I started at my usual time (advised by Glow) last week and used the cheap OPK on the 16th Sun which had two faint lines. I went on holiday on the 17th and took the CB. It was the circle all week until yesterday (18 days into cycle) when I got the flashy face. But I've used the OPK cheapies past two days as well and only one line. I'm worried that the cheapies were correct last week and the CB is the wrong result and I've missed my chance to try. Last week I had eggwhite CM, this week I have pains in my crotch, palpitations and indigestion. (If I have been a week out since M/C will explain why I keep thinking I'm having pregnancy symptoms!). Any one else have any experience with this, please?