Already suffer Anxiety and I'm going out of mind with worry.

I came across a pea size lump on my lower left side more to the left of my spine . I actually thought it was my bone so not sure I've haven't  noticed it already.

Went to the doctors after 3 weeks of worrying.

he said it was Lipoma fatty tissues. Nothing to worry about but because of my anxiety issues he said I could go for a scan to keep me calm.

still not convinced I saw another doctor and he said it's a soft fatty lump , nothing to be concerned about . I said what about a scan . He said no need for any tests. Obviously if getting concerned about growth then come back . 

It's been there 4 weeks now and still feels the same size and is not painful , I'm actually surprised how I noticed it .

But Im going out my mind with worry , every day and night . 
 

Surely if the first doctor wanted me to go for a scan he would have insisted . He said I've made an appointment but you can cancel if you want to . And the other doctor didn't even mention Scan .

Im more worried as Cancer is in my family my mam and dad both got diagnosed at the same time .Any help appreciated