has been time of the month for the last week so havent been able to have sex and yesterday all day all me and dp could think about was getting the kids to bed so we could, erm, make up for lost time 
anyway last night we were in bed and started kissing etc and things progressed, as they do, when suddenly i dried up and it soon became clear that we were not going to be able to rescue the situation, the more he tried the less turned on i became and in the end we had to give up, then DD woke up (she has a cold atm) so it just didn't happen. and he felt really bad, like he had failed.
we really fancy eachother and usually have really great sex so i just don't know why this happened :(
again, sorry for TMI but if anyone can offer any advice it would be much appreciated!