My husband and I are trying to conceive our third child. My last 3 cycles have been irregular (sept:33 days, October 21 days) I had unprotected sex a week before my period was due. 9 days later I bled but only for 3 days, which is unusual for me- could I be pregnant? I'm not at all sure when I ovulate. I feel tired, sick, snappy, tingly/ itchy nipples, bloated and hungry all the time!!