Appendectomy and periods

Natalie
I got my appendix removed two weeks ago and I just got my period in the middle of the night I've been waking up with awful cramps and I'm having to change my pad every 30 min to 1hr I'm having the heaviest flow I've ever had like crime scene bad is this normal after an appendectomy I googled but didn't seem to really find anything I need you ladies HELP!!!!!