Rectal bleeding and other symptoms for 2 years - Dr says fissure but unsure

Hi everyone, I’d really appreciate some advice.

I’ve been having on-and-off rectal bleeding for the past 2 years. It’s usually bright red, sometimes mixed in with the stool or seen in the toilet water. When this started I saw a doctor who told me is was haemorrhoids and sent me away. This has been ongoing for 2 years, and I brushed it off as haemorrhoids and didn’t follow it up. My most recent episode was the heaviest yet, so I finally booked a GP appointment.

Alongside the bleeding, I’ve been feeling lethargic for 2 years, have been told I’m borderline anaemic, and occasionally get sudden urgency with a dull ache low in my abdomen. I also regularly feel bloated and uncomfortable. I also feel full after eating small amounts of food and never finish a meal. Over these 2 years I’ve started getting mouth ulcers, something which I had never experienced prior.

I have an extensive family history of bowel disease - My Dad and uncle have Crohns and Diverticular disease, my aunty has ulcerative colitis, my granddad has recently been diagnosed with bowel cancer and my cousin has a stoma due to bowel disease, so I was worried it could be something more than haemorrhoids or a fissure. My dad was going to the doctor for years with bowel concerns and was constantly told it was IBS and my friend who has IBD was told it was haemorrhoids before being diagnosed with IBD.

At today’s GP appointment, I explained everything. She did a physical exam but did not do a PR, and said she could see a small anal fissure. She’s prescribed laxatives for 2 weeks and booked me in for a follow-up appointment.

I’m now unsure whether this is enough. Part of me is relieved she found a fissure, but another part is worried it might be something deeper and this will just be chalked up to that again. A fissure could explain the bleeding, sure, but it doesn’t explain my other symptoms.

Has anyone been through something similar? Should I push for a referral if nothing changes in 2 weeks?