I have a massive lump at the bottom of my vagina that was not there before, it is really painful and feels like something is about to drop out of me, any ideas as to whhat this could be

Please go to your gyno/obgyn.

Several ideas;

1) dropped bladder
2) dropped uterus
3) full rectum

If you haven't seen ob/gyn and are still struggling

Try: rectocele (dropping of rectum into vagina), cystocele (dropping of bladder into vagina), vaginal prolapse (dropping of the vagina itself), enterocele (dropping of intestines into vagina)

You may also have a large cyst, unusual pregnancy, tumor.

You never followed up here, so I pray you have gone to see OB/Gyn

If you cannot afford it, try Home - Modest Needs® (http://www.modestneeds.org) to get the $ to go for the exam.

I once worked in typesetting on medical journals I am not a medical professional.

I think you should go to your doctor A.S.A.P.