Josephine, I'm really sorry to hear you've not been well. If the jelly like substance was dark red, almost black then I would say that was a clot. Maybe you should tell your doctor about it as such large clots are not normal I've had them along with the contractions so I know how horrible they are. Big bug hugs to you xxx
Sorry af came but honestly I'm not surprised. You would have gotten a positive test way before now if you were ever pregnant. The clot was probably uterine lining. Better luck next month.