Thick white mucus, Pregnancy?

I have been getting a thick white mucus lately, my ovulation was meant to be around a week ago and I had a little mucus then and me and my partner had sex around 4 times around my ovulation. Since then though I have been warmer than usual, I've been getting pains in my lower back and tender breasts. Now I don't want to get my hopes up but since my ovulation the white mucus has increased and this is very unusual in my ordinary cycle, I've only had this mucus once before and that was around a miscarriage I had last November, has anyone else had similar symptoms and found themselves pregnant?