Interesting day for me today. Got my hospital results.
Dp's sperm is doing great, infact so great that he high fived the consultant 
I have PCOS (quite a bad case) and he said something about insulin and how I will gain weight extremely quickly (this is true) He said he is certain I don't ovulate every month, but knows I ovulate sometimes as my day 21 test my GP done showed i'd ovulated that month.
I also have "more eggs than all the women in your street's eggs put together" The consultant's words, not mine! He said my body doesn't know what to do with them, and this also leads me to not ovulate on occasions. All in all, i'm not ov'ing regularly. He advised clomid, but was adamant that due to all my eggs i'd end up with twins if I went down this road & managed to conceive, so I declined the offer. He suggested I use the clearblue digital fertility monitor (already bought one a few weeks ago) and this will let me know for definite if/when i'm ov'ing, so we will just keep trying for now, with the help of this machine.
He is also pushing ahead for a hycosy due to birth conplications with DD, he feels we should check my tubes are clear. Getting that in November.
So, I think there's no reason I can't conceive eventually? It just seems to be that i'm not ov'ing every month & the months that I do, the timing is a little off maybe?