No period after nexplanon removal

So I got my nexplanon put in the first week of October 2019. My periods were okay up until late dec. my period lasted from dec 20th - Jan11th. Which irregular periods is normal after getting birth control in. I get that .... but I got it taken out on feb 14th 2020. For personal reasons. And I had my normal period, on time, the next week after. 18-21st of February. And it is currently March 30th (38 days later.) and I still have not gotten my period. I have taken 4 tests on the last week and a half. And all negative. Is it normal to be so irregular even after getting birthcontrol out???!