Scared! I have had symptoms and felt a lump in my rectal area.

Hello , 

I'm sorry if I'm a pain to anyone but I really am looking for some advice , I feel so alone right this moment and really quite scared! Over the last few months I've been feeling pressure in my lower back but it's not normal back ache and it's hard discribe and found it hard to discribe to Drs... It's like a dull ache with pressure like I need to go toilet - like I felt when giving birth to my son! Also I've noted that my bowel habits changed awhile back ... Some times runny some times thin and flakey can be really smelly yet sometimes normal and a good 5/6 month back I remember having mucus come out. Also with this back ache I feel I need to go more and I tend trying to force myself to go usually I have to lean back on the toilet as well as having frequent gass.With this back ache and urge to go frequently I noted all the symptoms I thought where related to other things before all coming together ...although all mentioned to Drs of visits with other issued - been down the ibs route, acid , period pain with one dr telling me I'm a woman and we get these pains.. But it's getting unbareable .. Not with exscusating pain just the nagging sensation and tieredness and constant urge in my lower back of heaviness. Anyway this evening I was trying to go and couldn't but felt something trying to come out .. I decided to feel and I could feel a big bulge in my rectum it was hard and felt like it was blocking my passage .. It didn't feel like a hyena. After his I let out gass and a bit off mucusy blood came out. I'm going to the Drs in the Morning and not leaving until I'm listened to but I'm so so so scared and worried. I'm only 24 and have a 3 year old son that's needs looking after! Please can anyone relate to this and offer any reassurance or advice? 

Thanks 

Marie