My last period on jan. 27th and I took the Depo-Provera birth control shot on feb. 19th. I haven't had my period yet. Is this ok? Female 19 years old

Yes. It is actually normal to skip your periods after depo. You are not ovulating, so there is no reason for your body to have a period. Some women have occasional break-through bleeding that they may call a period, but this only happens occasionally. I assume they checked you for pregnancy prior to your shot of depo. If not, then a pregnancy test should be done.