My DH has 1 % morphology, we were told that unless there is something sevrely abnormal with the sperm then we should still conceive, they told us that it is the cell inside the sperm that needs to be normal, the shape does not matter. if the sperm is genetically normal it can still fertilise an egg. I tried to argue this with our FS but they told us it is fine.
Its very strange people are told such different things, I really don't know what to think. I have been given clomid for low progesterone, but I hate to think of filling my body with drugs if its pointless with DH's morphology.
There was a study on fertile men who got their partners pregnant within one year and they found the average fertile man only had 15% morphology, this is why they lowered all the normal ranges. We are still below normal which is 4% but FS is not concerned... I do not have a BFP though, and I wonder if this is the reason??
You did get a BFP with 10% though so of course its possible!! hopefully it will happen to you again FX'd