Hi again Joyful.
I don't want to scare you, but I do think it is a little worrying that he has not pooed, and I think it should be your top priority for someone who knows what they are talking about to observe him feeding.
However, there aren't many BF drop ins at the weekend, and I think you need to see someone before Monday. Post natal ward is a good idea. You could also call one of the BF helplines, they are open at weekends.
Every two hours sounds ok. Is that from the start of one feed to the start of the next? Round the clock more or less? He should be feeding 8-12 times in 24 hours. Are you offering both breasts each time? Standard advice is to feed on one side until baby stops/falls asleep, then change nappy or rouse them some other way and offer the other side. It's not uncommon for young babies to need waking up to feed.
How long is your baby feeding for? Very long feeds can be a sign of ineffective feeding. To assess effective feeding, you can look for big, slower jaw movements when baby settles into a feed, you may be able to hear swallowing, you may sometimes see milk in his mouth. But I think it's best to get a feed observed asap.
It is usual for babies to lose some weight- up to 7-8% of birth weight is not a concern.