Period after MC

UPDATE!!!! Finally got my period after 5.5 weeks. I haven’t been so excited to get a period lol

So I had a Ectopic pregnancy and tube removed on Jan 22nd. It’s been a month now and I have yet to start my period. I had my HCG tested Feb 12 and it was at 13. My question is about how soon should my period arrive? I know it can appear before you reach 0 and I’m pretty sure by now it should be at a 0. I don’t go back to get my levels checked again until next Wednesday.