Hi. I feel your pain. Former pre-med major here. Couldn't be happier.
A search for "psychologist" on the O*net site turned up the following list:
Quick Search
Work in a corporate setting as an industrial-organizational psychologist can be lucrative.
Psychology degree holders are needed in business, especially marketing.
You can also become a life coach, personal coach, or therapist with interesting specialties. A friend of mine is a therapist who's studying and incorporating the use of Enneagrams in her practice.
I was really lost for many years after deciding to forego the pre-med path (my heart just wasn't in it). The last 12 years have been tough as I struggled to find my identity. I faced more than a fair share of criticisms and discouragement while I explored my options.
No matter what happens to you, you can always learn from your experiences and mistakes. As Steve Jobs said in his 2005 commencement speech, you can't connect the dots looking forward, but you can connect the dots looking backward.
Once you graduate from college, find a new place to live, and start supporting yourself, you will be away from the influences of your parents (keep in touch with them though). Find new friends who believe in you and support you in the pursuit of your dreams (we do here!). Learning to trust your intuition, listening to your heart, and having confidence in your own judgement, intelligence, and resources are crucial to develop as an individual. Just remember that many people who are much older than you are totally lost.
If you find yourself in the position of having to take unfulfilling work temporarily while you pay off loans, try not to get too frustrated with yourself and Life. In the meantime, have a percentage of your income automatically transferred to a high-interest savings account (Emigrant - over 5%, for example) every month. Having such "financial cushion" will support you if you get laid off from a job or apply to a graduate program.
I don't know how things will work out for you, other people, or myself. It does sound like you are a giver. What I tell myself is that, if I continue to focus on making a contribution to society with a pure heart and mind and the purest of intentions, somehow things will work out. I wish you the best of luck!