Hi Heidi - I have fibroids, 2 fairly large ones (one the size of about a lemon, the other about a golfball). They've never caused me any pain or discomfort, nor have they ever required treatment of any kind. I have 2 kids, ages 3 1/2 and 14 months. Both children were conceived naturally, I delivered both vaginally. From all the research I've done & discussions with my healthcare providers, it depends a lot on not just their size, but their positioning (ie. where they are in the uterus, are they protruding into the uterus, out of the uterus, or right in the wall). Wait and see how things look when you have the ultrasound, that will offer a lot of info. Also from what I have read, fibroids are more likely to cause miscarriage than prevent conception (again, if they're hogging up space, that could be an issue for a little fetus). Fibroids are very 'blood thirsty' so sometimes they can grow during pregnancy since there is increased blood flow to that region of your body. I'm not sure how significant your are, but I remember the first time mine were found by my doc, it was during a pelvic exam, they were large enough for her to actually feel them (though I never had), so I was completely freaked out! This was before getting pregnant the first time and I was so afraid that I would never get pregnant, let alone have 2 healthy pregnancies/deliveries. I should mention, I never have had a miscarriage either. Last thing, there is a non-invasive means to treat fibroids now, and I am sorry I can't recall the name. I can look into it for you if you'd like just let me know. Please feel free to let me know if you have any other more specific questions... I know first hand the stress & fear you may be experiencing!! Oh, and I'm 33 too :) Good luck!