i rescued 2 kitten's when they was 4 week's old from someone who just didn't want them anymore i weened them litter trayed them and had to stimulate there bowl's at first and bottle feed them , i foned up my vet's to find out when i can get them fixed they wont do it untill there 6 month's old all are saying the same ( i'm in london) the problem is i have a male and a female who are 4 1/2 month's old now i'm worried that Fluffy will go into heat and i won't relise , is there anything else i can go by other then her trying to get out and rubbing everywhere??