Right, I'm back. I developed prolapses after the birth of my children (first was delivered by forceps) 8 and 10 years ago. Things felt very bulgy down below but it wasn't causing any problems, so I just got on with my life, didn't bother with pelvic floor exercises as much as I should have done etc. Then about three years ago I decided to get fit and started running and doing the 30 Day Shred DVD, also the DCs got a new trampoline. One day I was out running and I felt as though I urgently needed to go to the loo, a really heavy feeling, yet when I got home and tried I didn't actually need to go, and I realised the prolapses had suddenly got worse. I was having prblems going to the toilet as well. The feeling came and went for a couple of weeks, then became much worse, to the point where I couldn't sit comfortably any more, so I went off to the GP and was referred to the urogynae dept, I had successful surgery to repair it a few months later, that was 2 years ago.
Now, if I had my time again, I would have been much more careful to avoid all this happening, I would have done a proper workout for my PF and made sure my core was really strong before even thinking about running. I'm not sure whether I would have taken it up at all to be honest. So, if I was you I'd stop running for now and get off to the GP (maybe ask at reception if any of the GPs in your practice specialise in Women's Health). Other risk factors for prolapse include being menopausal, overweight, having hypermobility, doing a lot of heavy lifting, having had a lot of tearing or forceps in childbirth, that sort of thing, so if any of those apply do mention it. Ask for a referral to the Women's Health physio, they can make sure you are doing your PFEs correctly and tailor a programme for you, plus give you lots of other exercise and lifestyle advice to stop things getting worse.
Swimming and cycling are both a lot safer cardio exercise than running if you have any concerns about your PF, I mainly swim and walk now, I miss running and sometimes go for a gentle jog, but feel safer not doing too much of it. Definitely no trampolining for me either!