Maternity benefits ~ confused?

i have been claiming jsa since feb this yr and before that i was on maternity leave for 12 months. i had to leave my job because we moved out of the area and then started claiming the jsa. i have now just found out that i am 8 weeks pregnant and wanted to know is it ok to continue claiming this whilst pregnant or should i tell someone at the job centre. also if i go for an interview do i have to tell them that i am pregnant? if i dont manage to get a job soon is there another kind of maternity benefit i can claim until i have the baby???? just wondered if there is any1 else in a similar postion to me xx