brydz,

you really need to get to the doctor as soon as you can. If you really are far along enough to feel the baby moving, you need to know. Don't stress too much about the bad diet and drinking, it is done now and can't be changed, but, you can change things now that you suspect you are pregnent. Please go to the doctor and get a blood test (have you done any home pregnancy tests?). Your doctor will be able to advise you on what to do next and maybe refer you to a counsellor, I'm sure it will be quite a shock if you are pregnant and it would be great to have someone objective to talk to. Most of all, remember, you may not even be pregnant, and if you are, it is never too late to start looking after yourself and baby.