New Guinea Pig + Old Guinea Pig =worried

Question
Well this isn't really a question but more of a concern.  I have a Guinea Pig, Caramello and hes about 4 months old, i wanted to get him a friend since im not home much and it turned out to be a girl and he is a boy, her name is capacinno, anyway like i introduced them and after 15 mins caramello's going at her like crazy.  And all they do is mate, well he trys she doesnt really want it.  Shes only about 6 or 7 weeks old but if i seperate them they FLIP out, they scream to each other from their cages but lately, i dont know if its normal or not but caramello gets all sickly looking and sort of rocks back and forth and makes what i thought was the mating sound.  but thats all he does when hes with her...its like etetetet..sort of, sorry its hard to describe.  Should i seperate them..or will they bet to heart broken, they've only been together for about a week or so, and they're REALLY noisy at night, normally as soon as i turn the light out caramello shuts up instantly but now they dont shut up at all.  He also doesnt treat me the same either, he usually sqeaked for me as soon as i walked in or out of the room, and i mean scream sometimes too, and now he won't even let me pick him up without running away..he was so tame, and now its all gone i've had him since he was 5 weeks old...i dont know what to do i feel like i've lost my baby and i'm worried their might be something wrong.  Do you think i should get him a guy friend instead of a girl?  Sorry its so long.

Answer
Hi Krystie

It is never a good idea to put a male and female together unless you have thoroughly researched breeding and all the consequences of it.

You should seperate them straight away, as they've been together for a week already it is quite likely that the sow may be pregnant. They shouldn't be bred until they are at least 4 months old but what is done is done. If she is pregnant you need to ensure that she gets plenty of good quality vegetables and hay to make sure she gets the nutrients she needs for growth and for supporting the growing litter.

The change in behaviour is common for males once they have been introduced to a female. He should calm down again after a couple of weeks of being seperated from the female. Now that he has been with a sow it is more unlikely that he won't accept another male and it is liekly that they would fight if you introduced another male to him. However if Capacinno is pregnant and has any male babies you may be able to successfully introduce a young male to Caramello.

www.purvers.freeserve.co.uk/clarescavycorner

Have a look at the section on my website about breeding and babies so that you are prepared just in case there are babeis on the way.

I hope this helps. If you have any more questions please ask
Clare