I recently had a baby and went onto the contraception patch. today i went to the toilet and noticed a clear jelly like discharge? could i be pregnant?

Unlikely: If you are using the patch correctly, its unlikely you are pregnant. a clear jelly-like discharge can be a normal vaginal discharge or be many other things besides pregnancy. Its a non-specific finding. If you are worried about pregnancy and need peace-of-mind, do a home pregnancy test. Best wishes!

Unlikely, but...: Get a home pregnancy test. You may need to check twice. But what you describe is not a feature of becoming pregnant!