Forest lily is the common name for several plants, so not sure which one you're asking about. I'm going to assume its Pieris though - if its not, this answer doesn't apply.

If it is Pieris, it will certainly want a bigger pot by now - use ericaceous compost, and yes, do it now.

If you mean the Winter Red Hot Poker (Veltheimia), the leaves die back in summer so it would be best to leave repotting until the plant is in its dormant state.
As with a lot of plants they don't like to be disturbed - it doesn't sound as if it is pot-bound but it might need better drainage. It's a South African plant that needs sandy soil so mix a lot of grit into the compost (I'd go for equal parts grit to compost)

Hi thank you for your answers ..the blooms on the cacti are bright pink and with pointy petals ..I'd put PIC on but I don't no how the leaves don't usually look so sad they look more fuller if you no what I mean lol

OK - you need to be clear as to what this plant actually is before anyone can advise you. A photo might help someone to recognise it.
Add a photo by updating your question. Go to your profile by clicking on your name at the top of the page. Then click on your questions and click on this question. Towards the bottom of the page you will see an 'update question' button. Click on this and you will have the option to add a photo.

Hi I can't download PIC it won't do it ...if repotted it and so far it still blooming :-)

Try reducing the size of the picture to get a quicker upload.