Drooping cactus and identification

Hi guys, hoping someone can help me. I've had this cactus for around 4 years and I love it! It's become quite heavy and drooping badly. There's no discoloration and it's still flowering. Just wondering what I can do to help it. Tia and I will upload a picture

 

Some cacti do naturally grow like that. It's flowering so cannot be too unhappy. Does it get even light where it normally lives as they will tend to grow towards the light. I doubt if you can straighten it without damage so I'd be inclined to leave it.

 

Just guessing but it looks like a mamillaria, and agree with Nigel some do grow like that.
It looks pretty happy to me.

 

Thanks for your response it's on by the kitchen window and it's South facing so we have sunlight all day. I though maybe It may need a bigger pot? I get more and more flowers each year and I think it will definatly become damaged if I try to straighten it. Glad it seems happy