Suspicious moles/markings. Please help.

Hi sir/madam, I have two markings, one on my upper right thigh and the other on my right toe nail. I have looked through my old pics and could see the nail one in pics upto 4 years back (have no pics showing that area older than that). Not sure how long the thigh mole is present as I have no old pics of it. I noticed the thigh mole around 5 months back, not sure for how long it was present, started closely observing it for about 1.5 months back and in that there was no changes in it. I had also shown the thigh me to 2 dermatologist near me, both wasn't concerned about but they did only a visual exam without dermatoscope. They both said to just observe it for few months. I have no other symptoms. I am worried about both these, and need advice on whether I should get it checked in detail/biopsied. Please help.