Been refered to breast clinic

Hi all I’m 31 and felt a lump in my breast just over a week ago. I check my boobs quite often as I have really bad health anxiety, I’m absolutely terrified , I went to to the drs who felt my boob and said should couldn’t feel any lump just normal breast tissue she said to come back in a month and she will re check. A few days passed and I could stop worrying and could feel the lump it’s on my left breast near my nipple . Feels kinda like a pea and moves around . I went back today to see another doctor he could feel it and said it feels like a gland or breast tissue and I have quite nodules boobs . 

He said he isn’t worried by what he felt but has refered me to the breast clinic I understand they do this to he safe. But not I’m terrified can’t stop crying convinced I’m dying . I have 3 young boys 7 5 3. And I don’t want to die . 

We go on holiday the 15th July and don’t no if I would of been seen by then. 

Donna