a question

New born poos are very runny so that sounds normal. When he is trying to fart you could rub his belly clockwise as that helps move the wind or lay him on his back and pump his legs towards his body. The other thing to do is to try and make him burp all the wind up by sitting him upright for a while after each feed so that he doesn't need to fart it out. Good ways to bring up wind are sitting upright, putting over your shoulder and gently patting or lay face down across your knees and rub back (put spew cloth on floor for any spillys).
Failing that you could try either gripe water or infacol.

thanks guys. Mum said to me maybe he is being a piggy and so we were thinking about maybe only feeding for a certain amount of time. Any ideas on this method? At his last feed I only fed him for 5 mins and then MW was here for his 1 week check and after she was done with him he had cuddles and has been asleep since (that was an hour ago) so am wondering if maybe he got enough and so was thinking about trying to limit how much time he feeds for to see if that helps

I wouldn't limit time for feeding either - especially this early on! 1 week olds are still learning to breastfeed, and limiting that isn't going to be good for either of you :( If anything, I'd burp him more often - say stop after 5 / 10 minutes and wind him, then try offering again, as sometimes that's easier / more effective / less messy than just burping them after a full feed.

The other thing to keep in mind, especially at this early age, is that hungry babies have a 'starvation mode'; if they don't get enough to eat they are lethargic and sleep more, then have little energy to feed, thus can't get enough, and it's a nasty cycle. K did this so I speak from experience - meanwhile I thought she was contented as she'd happily sleep in excess of 4 hours straight! In very young babies, sleep is not always a good thing.