Welcome to HCM.
Contraceptive has no relation with hair loss but it is related with low Hb count.
Start hemetinics to increase Hb.Start complete course of intra muscular B1,B6,
B12 injection.Apply
minoxidil, aminexil topical solution.Oral medicine which contains ca.patothenate,inositol,vit-e,zinc,
selenium,b12 will be helpful.Use good hair oil.Don't keep your dry for long time.
Apple,tomato,cherry,Black grapes,bit will be helpful to increase Hb.
Eat good nutritious diet,Sprouted pulses.
Do regular exercise,yoga.
Consult your doctor for better guidance and medical management.