Feeling positive

I should of had my depo on the 23rd February but as myself and husband have decided to try for our 4th child I didn't get it. Today is the first day of my period it's only light but it's happening. I'm feeling a little anxious as a year ago we decided to start trying and after being off it for 4 months nothing was happening no period nothing. Unfortunately I chose to return to the depo as we'd had bad news within the family and felt the timing was wrong for us to continue trying. Has anyone else been lucky enough to have a period retain so soon I've not had one now for over 5 years but been on the depo on and off for 16 years