When walking i get painunder my chin on both side. started about 5 months ago. it is dull ache seems to be coming from my gland but they arent swol?

Exertional neck pain: If this discomfort is reliably reproducible with exertion I would talk to a doctor as it may be a sign of early heart disease. It could also be that it is related to your posture or neck movement with walking.

Get checked: lower anterior teeth when unhealthy will drain inferiorly to the gland or soft tissue under the chin. The most common cause is trauma to a lower anterior tooth from either macro or micro trauma like clenching/grinding.

Don't Ignore!: Your pain could be a variant of Angina (Heart problem) This is particularly true in females. See your Primary Care Doctor ASAP. Do not ignore the pain!