It’s pretty much a given that your hormones go haywire when you’re pregnant but most people ignore how mental illness can be affected by pregnancy. I myself suffer from Bipolar Disorder and when I found out that I was pregnant with my second child obviously I couldn’t continue with the medication I was taking; I found the ‘withdrawal’ symptoms tough to handle and found that my moods were more erratic than they were with my first pregnancy amongst other problems. The trick is to make sure that tell your midwife about any mental health problems that you have and they will ensure that you get the support you need through the duration of your pregnancy.
There are various agencies within the NHS that support expectant mothers and also after the birth. These include the Mother and Baby Unit which is based in most cases at your local hospital which are usually accessed following a referral from your GP. The best thing is to ask your midwife what services are available and how to access them. You don’t have to suffer alone there is help available in so many sources.