So a few times I've noticed a bit of blood in my discharge after I've had sex or been fingered by my boyfriend, I notice it that day and a fee days after, no abdominal pain, sometimes there's a slight stinging in my vagina when I go to the toilet, any ideas of what it could be?

Rough sex? Are his finger nails short and clean? Is there enough lubrication? The vaginal canal is extremely vascular. Any trauma, no matter how small, can cause bleeding either from the vaginal canal or the cervix.

Well this time I was on top. That sometimes causes me a bit of discomfort, when he's on top there's no problem, he was a bit rough with the fingering though, do you think that's all it could be? Surely there's no need to consult a doctor?

I always recommend seeking medical attention. It could be nothing serious, but there are medical conditions that could cause this as well.

We've been together for almost 2 years, not been with anyone bar each other, he was my first and I was his, so know it can't be an sti or that, I know I'm not pregnant as I'm on the combined pill, I take it everyday at the same time, I know when my periods are due and when they will end, we do still use condoms sometimes, what else could this be?

It could be an infection of some sort. Not all infections are STIs. Cervical polyps or HPV is just another idea.

We can't examine you or do necessary testing. Nor can we diagnose. We can only provide suggestions. Your doctor can provide the proper diagnosis and treatment if necessary.

I honestly think he's just managed to scratch or cut me a little but I'll make an appointment today

It could be that's all it is, best to always be proactive with your health.

Please let me know how it goes.