Hi I'm A 44 Yrs Old Woman That's Been Trying

Hi I'm a 44 yrs old woman that's been trying to conceive for 2 yrs I've been on closed and it hasn't worked in am over wieght and I'm trying to lose more I was just wondering if the fact I'm supposed to be on clexine for life and because I refused to try another new drug because of wanting get another child the pharmacist at the hospital stopped my clexine my periods are so irregular now I don't no when I'm ovulating or not and some times I can be really late as my last email pms was 13th of March now nothing and negative pregnancy test