Is there a time limit to make an ectopic pregnancy injury compensation claim?

Yes; the ‘limitation’ period to bring a claim for medical negligence is three years from the date of the injury or in some cases three years from the date of knowledge fo the injury.  This means that if you only became aware of the injury weeks, months, or even years after it was caused, the three-year period will commence from then.  If you were under 18 when the misdiagnosis occurred, the three-year timescale only starts from your eighteenth birthday.  In rare circumstances, the Court may use their discretion to extend the limitation period, but only for exceptional reasons.