Hi, I'm new to mumsnet. I've been ttc for 15mths, I'm 39. Had blood tests and on waiting list for further tests. Other half has had sperm tested and all good. I have occassionally used the ovulation tests but trying to just have sex every other day rather than stress about it, however last month I used them and got the smiley face on day 9. However yesterday at day 21 (I usually have a 25/26 day cycle) I had the start of cramping and very dark blood, it's very light (no clotting), I still have it a bit today but it's certainly not my normal period. Am I getting myself too excited to think it might be implantation bleeding and cramps?