Should I test?

12 months PP. LO just turned 1 on the 9th of Dec. Aunt Flo was scheduled to visit on the 2nd... never showed. I’ve still been breastfeeding LO 3-4 times a day. Also been on the mini pill since 2 months PP. Should I test? I really didn’t plan on being pregnant again. Of course, we’d be happy but it would definitely put a strain on things. Any advice for a 1st time, possibly 2nd time, Mom? 😊