The symptoms you are experiencing is due to your contact lens
Contact lens when worn for more than recommended time duration may cause irritation to eyes.
This may also cause infections.
Eye infections are frequently associated with watering which also causes watering from nostrils.
Since you said you had plenty of crusts and watering of eye with pain, this may be due to infections which is usually associated with redness
But anyway it is better to take antibiotic eye drops for once in 2- 3 hours time.
You may also need to take some analgesics.
DONT wear your contacts for atleast 1 week, if those contacts are old it is advisable to change the contacts to new ones.
If the problem persist you may need to visit your Opthalmologist.