Postpartum sex

Is it normal to pee during sex after baby? We've only had sex 2 times since and I'm 11 weeks postpartum today. Tonight I started peeing?! I couldn't control it. I did have a catheter for about a day after I gave birth but thought it would have been healed from that by now? For a few weeks I was peeing every time I sneezed but now I usually don't. Are my muscles just that weak from labor and the catheter? I did have a very rough labor. I was induced and then in labor for 35 hours with 5+ of pushing.