Diana, I'm so sorry that you're feeling so mental ATM. I can imagine this whole cycle thing must be driving you nuts. Just remember though, sometimes it can take a huge amount of time for your cycle to become regular again. After all, you were regular like clockwork B4 you lost your little boy. But the grief of losing your baby, and the stress your body has been thru, no wonder your cycles are all over the place. I really don't know how to advise you hun, but I believe being 38 you should look at other options if your cycles are not regulated soon.
I had to do IVF for 2 reasons,1) my DF sperm count is very low after an unsuccessful versectomy reversal in April 2008, and 2) my age.
Before the urologist did my DF's reversal, he actually advised us to do IVF without spending the $4500 on the operation, as he said IVF would be quicker and cheaper. But we so wanted to get pregnant naturally, we didn't care about the money. It turned out the operation was a flop, and we had to fo IVF anyway.....
I got pregnant straight away, but I believe it was because I wasn't that stressed about the whole thing especially when I realized the injections were a breeze. That's what I stressed about the most, but after my first one, I was so relieved that it wasn't so bad. I reaslised it was a small price to pay for a beautiful baby at the end of it all. Having said all that, I do reaslise and appreciate that for some women IVF is a very hard journey. I believe it's a lot to do with the fact that sometimes the choice is taken out of your hands, and you suddenly leave everything to the people in white coats, and you suddenly feel so out of control, it is very strssful. The other thing is, some women go thru so many cycles that their bodies go thru hell and hence the stress levels go up.
Try if you can to think positive thoughts ( I know, I know... ) and imagine that your cycles are regular, and see what happens. Sorry, I do know it's so much easier said than done.

Good luck hun xxxx I hope I helped a little....

Love
Beata xxx