Since most people want to hit someone who complains about being too thin...
So I've been TTC #2 for going on 10 months now. I talked to my doctor about this in January and she thought the issue might be my low BMI. It's true that when I got pregnant with DD, I was almost 10 pounds heavier than I am now, largely as a result of having had a very bad UC flare-up and being on steroids. My doctor at the time gave me the green light to TTC as soon as I was off the steroids and I got pregnant the second month of trying, before the steroid weight had really come off.
I honestly don't think I could gain that kind of weight on my own, without steroids. I am trying so hard to eat healthy fats- avocadoes, coconut oil, fatty fish like salmon, brazil nuts and other fatty nuts, full-fat yogurt (including Greek yogurt), etc. But I also walk a lot in my daily life and engage in exercise like running and yoga, which help me destress and manage my overall symptoms. Clearly I need to be ingesting more calories to keep up with this level of physical activity, but even so, I feel like my body just doesn't process everything I put in it, no matter how much more I try to eat. To boot, my blood sugar is on the high-end, so I am trying to watch my carb intake, even though I know carbs are an easy way to beef up.
I should probably see a dietician/professional, but right now it's 11pm here and I just feel like crying when I think about it. I read a stupid fertility article on the bump tonight that said if my BMI is low, "just gaining 5 pounds" could make a difference and I practically threw the computer out the window in frustration.
I'm sorry. I can't imagine how frustrating that would be. stay away from those stupid bump articles! I hope you're able to work something out with either your doctor or a dietician. keep us posted - I'll be rooting for you!
ETA: also please don't feel guilty complaining about this. your body isn't working properly and it's affecting your success with TTC. that is a real problem and you deserve the opportunity to vent.