Feeling guilty

Should I feel guilty for wanting to start TTC baby 2? My best friend is having trouble conceiving baby 1 and I'm ready to go for baby 2. I support everything she's been going through and have been by her side through the ups and downs of her journey. My husband and I are ready for baby 2 but I can't help but feel guilty if we don't 'wait' for her to get pregnant. 
I got pregnant with our daughter on the pill, but I can't help but be concerned that it may not be that 'easy' to have baby 2, that's why I want to start TTC now. 
I don't personally understand her struggle, but I also don't want to delay my personal life. I'm scared if I don't 'wait for her' if I get pregnant with baby 2, she will resent me and it will put a damper on our friendship. 
Thoughts??