Hi! I am growing some zucchini and some yellow squash seedlings indoors. This morning I looked under one of the true leaves, and found that there are tiny green bumps. They are the size of little aphids. I tried scraping some off, thinking they might be insect eggs, but it's like the bumps are attatched to the plant. Is this normal?! Can anyone help me?! Thanks! ~Tgplp