Thank you for the additional information.
A swelling in the labia majora is more likely to be caused by a swelling of the Bartholin's gland , rather than a lymph node. This gland opens into the vagina
by a small duct which can get blocked due to infection. It is likely that this is what occurred in you - the duct got blocked, the Bartholin's gland swelled up and you had a painful swelling. Once the infection decreased, the duct opened up and the swelling also decreased.
i do not think that the lymoh nodes in the arm pits are related to that of teh Bartholins gland.
Lymph nodes may be normally palpable in the armpits. Normal lymph nodes are about 1 cm in size and are usually not painful unless there is an infection or if the nodes are repeatedly pressed or touched.
Nodes which are palpable on both sides could mean that either there is an infection which has spread on both sides or that you have a blood condition which needs to be diagnosed with a blood test for the blood cell counts.
It could also mean that these are normal nodes and they are painful because you have been touching and pressing them repeatedly.
Please consult a doctor for an examination.
I hope this helps.