Still think you are being hard on yourself! You--and anyone really--needs stability in a relationship in order for attachment to blossom. Teachers are teachers and are not equipped for that kind of relationship (long story on my part, i've had experience in that dept.)

If you are in the states, the new healthcare laws may make it more affordable to get coverage on your own--metal health is included under parity laws. Don't deprive yourself care if you need it!