They may end up giving you an enema
to clean you out while they try and find the reason for
why you're not regularly going. For some people it can be a lack of adequate water intake (not drinking enough water), and for others, it may be other little things in their diet, hormones, etc. But, there's really nothing you can do at home for it, except try drinking more water for a few days to see if this helps you to go, but for the "lump" down there, you need to see a Dr.