The ear canal is about 2 cm deep. It cannot be completely cleaned with a Q-tip. In fact, doing so can result in an ear infection as the skin is delicate and prone to scrapes and scratches and bacteria getting into these breaks in the skin.
What you are experiencing could be a small amount of fluid in your ear canal all the way up against the tympanic membrane (the eardrum). This fluid could be water, sweat, blood or pus. Similarly, there could be some moist wax up against the eardrum irritating it every time the drum moves.
Another possibility would be that your eustachian tube that normally drains the middle ear is opening and closing creating a small suction phenomenon in the ear. This is usually from allergies. You might benefit from taking benedryl or claritin or a decongestant, etc.
If this does not improve within a few days, or worsens, make an appointment to have your family doctor take a look inside your ear. Visualizing it properly requires a special instrument.
Rapidly pulling out the earplugs may have caused fluid or wax or cellular debri within the canal to shift, possibly settling up against the eardrum. This will create a strange sensation whenever sound or circulating air hits the drum. It can also make the drum more sensitive to loud noises because the loud noises cause the drum to vibrate.
Similarly, there may have been an element of barotrauma to the eardrum from the suction you created by pulling out the plugs quickly. This could also be uncomfortable for a few days.
You can try using an over the counter ear wax remover like debrox. Using this substance for 5-7 days should clear out any wax, debri, even dried blood if present. Ask your pharmacist for help in selecting the right agent.