I am on 50mg and also in the unexplained category...I Ovulate on my own too, frustrating when they can't really explain why I'm not getting pregnant.. Although I have had issues in the past, they tell me there isn't a reason for my losses or a reason why I am not pregnant again. I get bad headaches, sore breasts and nausea towards the end of my cycle and really heavy periods. Im gearing myself up for more BD'ing this weekend, although I have to work inbetween... got to try and fit it in somehow! Started charting on FF this month.. not sure if thats adding to my stress or not. Do you chart?