Sorry, Arm, it's taken me a few days to notice the message because I'm a great fanjo evangelist, but, a rubbish PA.
Thanks, Welly, I think we need to get a light beam in the sky a la Batman when there's a "help, my fanny's broken" thread?
So, I'm a physio, and I tend to witter on about pelvic floor exercises most of the time.
Pelvic floor exercises are the answer to incontinence. There's loads of research showing that they work, but, the problem is that women find them hard to do, and hard to remember to do.
There's a couple of other things with you though - the "gathering" sounds a little like incomplete emptying, which isn't uncommon in pregnancy. I take it that you CAN pee? (any inability to pass urine at all is an emergency, so, I really hope it's not that. I feel guilty enough about my tardiness in responding!)
Here's a page about incomplete emptying for info. If any of it looks familiar mention it to your MW or GP. It can be easily treated, usually by sitting for longer, waiting for a few minutes, seeing if you can pee a bit more or leaning forward (though, that's tricky with a bump)
incomplete bladder emptying
Anyhoo, ANY leaking of urine is abnormal. So, yes, you need to get that sorted because it'll worsen as your pregnancy progresses because the weight of the baby, placenta, extra blood, the hormone changes, all squish your bladder or sag your pelvic floor.
My advice would be, see your GP and make sure you've not got a UTI or thrush thing going on.
Do two exercises, three times a day, every day, more if you can manage.
Hold for a count of 10 - imagine you are holding in a fart, you really don't want it to slip out because it's going to be a stinker. Holding for 10 seconds is important because you'll have a reflex inhibition effect, so, it buys you time. When you "let go" you should feel a "drop" into your gusset. No drop and you've lost the contraction, so, keep going and aim to get to 10.
Then, do 10 quick flicks in a row, so on/off, on/off, on/off, on/off, on/off 10 times in a row. That's the one that'll stop you from peeing yourself when you sneeze/cough.
Follow me @gussiegrips on twitter, when I tweet, you twitch your twinkle. Set your phone alarm to go off three times a day, or, do them when you brush your teeth, just something that will remind you, doesn't matter what it is.
Lastly, don't panic. What you are describing is something that 1:3 women experience. Let me say that again, A THIRD of mumsnetter's pish themselves.
But, importantly, it's curable. 84% of simple stress incontinence is cured in 5 physio sessions, and doing it yourself still has a success rate of 70-80%. That's true of women who have had a baby, are menopausal, or who are elderly. The one group who probably won't achieve continence within three months are women who are currently pregnant. So, get some pads, do your exercises , and focus on developing a habit that will help you no end once your baby's here.
So, you clear? See your GP to make sure you've not got a UTI, and get them to check about this "gagthering" sensation.
Hold 10, 10 quick flicks, and lots of it.
Set a reminder on your phone, follow me @gussiegrips,
Don't panic.
Let me know how you get on. Seriously, I get all emotionally invested in leaky ladies.