Sex problem

I’ll be 2 years postpartum in April but I’m 13 weeks pregnant with baby 3. I had a 2nd degree tear with my first and a slight tear with my second (only a couple stitches worth). But I’ve noticed lately no matter what position we’re in, how gentle we are or how lubricated I am, everytime we have sex I rip my perenium a little bit (enough to bleed enough to say there’s blood). It’s very uncomfortable and I’m not sure why it’s happening now… I never had an issue until now?

Has anyone had this happen before? What can I do to prevent it? Or stop it?