Depo Shot For the First Time!

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I just recently got the depo shot about 2 weeks ago. I was going to get the IUD but I have pelvic floor muscle issues(?) & wasn’t able to get the spec in. Anyway, I last got my period Oct 5 & haven’t gotten it since. I know I’m not pregnant only cause I haven’t had sex since September 1st(😢sad, ik) But is this normal for first time Depo shot users??