late period after a TL

Ja
Hey Glow Community 
I got my tubes clamped (tubal ligation) January 2016. I had my baby 11/15/15. When I got my 1st period it was extremely heavy which I expected because after delivery I got the depo shot. Anyway my period came on every month around the same time. Until December 16' I missed that whole month. I got my period for January and February. My period is now 10 days late!!! Idk if I should take a pregnancy test or is this normal. Does sperm affect when your period comes on? My husband and I have been having sex almost everyday while he nuts inside me. Idk help anybody????