Need advice!!!

So I'm going to start by saying I have 2 children. 3 years old and 1 and a half... Okay so in July last year I had an abortion at 5 weeks with the pill... right after I got pregnant again didn't know it until 9 weeks and had a surgical removal on the end of september. I got the implanon implant and took it out because it was causing issues in december. Since then I've been having unprotected sex and miscarried. Last month I had a period on the 17th I don't remember how long it lasted? This month I've had a few negative tests and a positive but I should have had my period by the 17th it's now the 25th. Still some random bleeding usually only after intercourse or during (my SO is pretty big) based on that do you think there's a possibility I'm pregnant or what's going on with my body I'm pretty concerned that I won't be able to have anymore children all of the sudden. Please no judgment !!!!