Im like that when you wee it burns and when you wee only a lil bit wee comes out and its painful, ive never had a STI either so i can't really comment on that i was told it was a infection but it never went away before being diagnosed with endo i was told it was so many things but burning when peein a lot of girls with endo do. It taken me six years to get diagnosed the only way is to keep going to the doctors and telling them what's going on at first they might try and fob you of with pain killers thats what they did with me also but after a while they will give you a laproscopy if you keep telling them about it.
Im the opposite to you because i wish i never had the laproscopy i know in someway it must of helped and i had severe endo but sometimes i think if i didn't know i wouldn't have things that are kinda worrying like if il ever have children.
but everyone's different , the laproscopy didnt help for my pain helped for about 2 months but its been a few months now and the endo came back.
if you ever need to talk im here just message me : )