SaraJane - I've found that when I ovulate from my left ovary my temp tends to creep up slower than when I ovulate from my right. My acupuncturist told me that one ovary can be a bit lazier than the other when it comes to quickly producing progesterone, so not too worry. I often don't see my temperature go above the coverline until 4DPO. That's what I am today and it's when I've had my first real temp increase I hope yours comes tomorrow!! FF has only given me dotted lines too, but any lines are good in my book