This is part three of a series of blog posts, in which I blog about how to succeed as a mother and graduate student. Please note, - this is my opinion, it's how I and some friends got through this successfully, and on what patterns I have observed in others that failed.
During the first trimester, you have quite a high chance of miscarriage. Some people have estimated it at 25%. You really, really don't want to have told everyone at work about your pregnancy, and then to have to tell everybody how you miscarried. It happened to me, - by chance. A co-worker, with whom I was not friends with (but on somewhat friendly terms), asked me bluntly whether I was expecting, when I was 7 weeks. I was surprised, but didn't manage to lie. He was nice and didn't tell anyone else, but when he asked me three weeks later how I was, I had to tell him I miscarried. And since said co-worker was far from a close friend of me, that was no fun at all. So, learn from my fail: pre week 12, only tell those people whom you are comfortable discussing your very private gynaecological and psychological details with.
How to hide the vomiting/tiredness whatever side-effects during the first trimester? If it's bearable, go to the lab, work, try to hide it, or say you caught a cold. If it's absolutely not bearable, take sick leave, - but don't reveal the real reason if you don't have to.
Chances are that if you do, people will label you with "difficult pregnant lady" and "won't be strong enough to manage a baby and a career". i won't discuss here whether that's fair (it's not, and I have a very strong opinion on this), but for pragmatic reasons, you should consider what people see in you. You want them to see a strong scientist, not a mommy (more about this later). So, - suit up. It sucks, yes. But things usually get better around week 10-12.
Once you've reached 12 weeks, the probability of a miscarriage drops significantly, and this is the right time to come out.
How to tell your advisor? Well, first, ask for an appointment. Say something like "I'm pregnant, my due date is xx, I am entitled to leave from y-z, which I would like to take. I have made xxx arrangements in order to keep my experiments running/feed my mice during that time. After I come back, I have daycare arranged and will try to be as productive as I am now, - I have made arrangements for me to be able to do the necessary night shifts. I have also found this grant we can apply to, which will provide money for a technician to replace me while I'm on leave."
Make sure that for all claims/plans ect. you tell her, you can present evidence. Don't make things up. If you don't have daycare yet, say "We are on the waiting lists in daycare A, B, and C."
The key message here is, - don't expect flowers and congratulations. Keep it professional, - this is *not* a meeting to discuss your baby, it's about your science, and how it will fit in. Acting all professional will send your advisor the right signals, - that you are serious to continue.
Then, you will need to give your advisor some time to digest. She may be scared that her research/tenure is endangered, and she, too, needs time to gather information and come up with a plan. If she's any good, she will come up with a great plan. Or at least, she will let you go with your plan. Or she'll have good suggestions of how to improve it.
If your advisor is really, really horrible, find a contact at your university who can help. Another mentor, an equality officer, something.
Also when talking to other people at work, always keep it professional when you talk about your pregnancy, - if you don't lament about how you want a baby so hard but instead point out how you will achieve great science despite a changed personal situation, they can't think of you the wrong way, - because you're constantly proving their ideas wrong.
So, whatever the hormones do to you, - live that out someplace else. Find a friend who's pregnant too, an online forum, anything, but don't discuss pregnancy, or worse, baby related stuff in the lab. You want them to see you as a scientist, not as a mommy. Watch how men talk with their colleagues when their partner is expecting a baby. Observe how little personal detail they share. That's what you want to do, too.
As a final note, - yes, it is horrible that we have to mimic male behaviour in order to be successful as a mother and a scientist. As much as I like rebellion and fighting the system, - while you're pregnant is not the best time to do it. Now you need all your energy to persist, - once you've made it to the top, then do what you can to change the situation for your own students.