Mine grew with the progesterone only pill plus I got vaginal dryness, itching vulva, no sex drive and it was really hard to lose weight. Now back on lovely lovely Femodene and feel much more myself with the balance of oestrogen as well, slimmer, proportionate boobs, all the horrible symptoms have gone and still no sign of endometriosis which the GP was worried about coming back with the oestrogen. Balancing hormones is absolutely key whether it's contraception or HRT.