I would check your stems very carefully and see if you have any worm holes also you might have root aphids . Look man there's a lot of possibilities . Take a slice of potato and put it on top of the soil over night and check it with a magnify scope and see if you have bugs .
Thanks for the warm welcome and please excuse me for not being around to often .
Its growing time and I'm very busy between that and my honey do list LOL !