I found a fuzzy little white bug on the stem of my prayer plant this morning. She's an indoor plant and I never open the windows so I'm wondering how that thing even got there. I saw one last week on the underside of a leaf on the same plant, too. I looked it up. Is this a mealy bug?

Help! How do I make sure there aren't anymore? I removed the two I saw.

My plant has one new shoot that's about to unfurl soon and I noticed that this shoot seems unlike the others: pale, yellowish and I can swear the top edge of the shoot is soft and turning light brown? Could these bugs be what's causing this? The plant looks healthy otherwise. It's had many new shoots since I received it last month.