Dealing with other people's BFPs?

​I'm looking for some advice on how to cope with this. I go back to work next week after the summer break and I know one of my best friends at work will be announcing her pregnancy after her scan next week (she told me very early on so have had to keep her secrets for weeks!) I know she'll be as sensitive as she can be towards me but this will also be the week that I will get AF having been trying for 8months. I genuinely am happy for her but I'm starting to get myself really worked up about how I will feel when she announces it. She only got married last week so this was totally unplanned and no one will be expecting it, however I know everyone has been expecting an announcement from me for months now.