Is it possible to get a false negative ?

I’m on the depo shot but had unprotected sex the first day I got on it December 15th (dr never told me I had to wait 7 days to be protected my husband pulled out tho) now 2 months later I’ve taken 2 pregnancy test that came back negative and I got my period last month but not this month could those pregnancy test been a false negative? Or am I just over thinking this

Vote below to see results!