Need some advice

Hey, Ladies! I need some advice. I twisted my ankle about a month or maybe over a month ago and the ankle itself doesnr hurt anymore, but I am having trouble with my Achilles tendon, or at least around where the tendon would be. It hurts and causes me to limp if I sit too long and stand up and try to walk. The pain lasts a while or until I've walked around for about 5 minutes. Does this sound serious at all? I can walk and the pain isn't extreme. No bruising and stuff like that. Just kinda worried because I never had problems with it before.