I'm 20 weeks pregnant this week, and since about 16 weeks I've been getting Braxton Hicks - completely textbook, not painful, but I'm certainly aware of when one comes on and the bump is rock hard. It hadn't occured to me that this was a cause for concern, but I've done some Googling (bad idea, I know) which suggests BHs might affect the cervix. Now I'm kicking myself for ignoring them for so long! Should I be worried? Is it normal to be getting them this early in a first pregnancy?