hello , i am a new owner of 2 baby guinea pigs, and i am sorry to say i was lied to at the pet store, before you all stone me for this, let me explain what the problem is. i was told i can only keep a male and a female togheter if i want them to get along, so that is what i did, of course now i know this is not true, but i have 1 very large cage and i do not want to risk my female's life, she had 1 heat and yes they were togheter BUT now that i know how bad that is i separate them for about 3 days when she is about to enter heats again (they are separated right now) so i want to know. how can i tell if she is pregnant, are heats really every 16 days and do they last 2 days? i know many will be angry that they mated (probably) already but i want to make it ok, i will do what i have to to keep her from having litters but i also dont want to keep them apart always for they really like each other. btw they boh are about 8 weeks old