I have been feeling generally slower recently and my memory is significantly worse. I am concerned about lead poisioning

16M For the past month or so I've noticed a general feeling of being slower and less sharp than usual, and recently (in the last week or so) it's gotten more pronounced especially the memory aspect for example I forgot the orientation of the last two numbers of the code, and while trying to do mental math I quickly forget the numbers (something that is not typical for me) as for my exposure to lead there were 3 times this happened. The first was 8 months ago when I did a project which involved etching circuit boards which had lead solder on them in acid, I thought I was careful and wore gloves when handling the acid but its possible a small amount got on my skin. The second time was 7 months ago when I took an oil painting class and used lead paint, for the class I would say I worked on the paintings around 3 days a week for a month and a half each time using lead paint. The third time was around a month ago when I did a lab in chem class and handled around 5 grams of lead nitrate, this also involved picking up a filter paper soaked in the lead nitrate solution (I went back and checked the solutions concentration was supposed to be 5 grams in 150 mililitres of water). I also take Lithium and Viibyd idk if that's relavent