Diagnosed TE after having the contraceptive implant fitted. 11 month shed - implant now removed, when should I see improvement?

My hair started shedding in Jan - in Apr I had blood tests for iron, thyroid, blood counts, normal. Saw a dermatologist in Sept who diagnosed telogen effluvium as I have no visible scarring. More bloods in Oct - again, all normal. I eventually suspected Nexplanon as I'd had this implanted in Sept 2015. After 2 failed removals I had this removed 2 weeks ago. If this is the cause of my TE, when should I start to see improvement? At the moment it just looks like things are getting worse. Thank you.