should I be worried?

about a month ago I got a blood test and I had low neutrophils. I was told to come back again in a couple weeks to get another as I had just had a cold so we thought that might be why. I got the results today and my neutrophils are still low and I have to get another blood test in a month. I have also been bruising really easily lately, right now I have 22 bruises on my legs. I’ve also got so many ulcers in my mouth. should I be worried about leukaemia or is that an overreaction? or is there something else I should be worried about?

and advice would be helpful :)

thank you