Meets & Pregnancy?

I thought I'd posted this yesterday but I don't see it. My apologies if it did end up floating around here somewhere. Hi. :) I'm new here although I've been popping in and out for a couple of months to read various discussions. I am a 28 year-old female who has been swimming competitively for most of her life. I'm doing low-mileage masters now to complement my running and lifting activities and quite enjoy it. Last week my husband and I found out that we are expecting our first child. Now that it's sunk in, I realize that my routines will have to change a bit. I think my swim practices should be easy to modify. However, I had just signed up for a local summer competition league when we found out. There are six SCY meets total with short events (longest being IM & 100 fr), and the first is this Thursday. Based on reading I've done online and a call to my health insurance Nurse Help line, it appears that I probably should not do dive starts from the deck even as early as I am now at 5 weeks. Has anyone else heard of this or heard differently? I'm going to call my ob/gyn doctor tomorrow to verify but there really seems to be a limited understanding in the medical community of competitive swimming. I'm especially curious about this because we're trying to keep the pregnancy a secret for a couple of months to make sure it sticks and avoid news spreading too soon to my company. In-water starts will certainly raise eyebrows so I might need to pull out of the competition league and just stick with practices if I can't dive. Any thoughts are appreciated. Thanks!