First test after miscarriage

Hi lovelies! On the 28th of September I unfortunately miscarried, I passed everything quickly and my HCG was quick to go down so I was told I could try again straight away. Last tuesday (11th October) I had really lumpy, stringy jelly like CM. I’ve had some really light cramping on my left side but just did a test and its negative. Is it likely I ovulated on the 11th? If so this makes me 8DPO. Is this too early for a positive? I had absolutely convinced myself it would be positive and am shattered. Any help PLEASE!