Should i be worried?

I am currently 10 days late.

I’ve taken two clear blue pregnancy tests and both came back negative

I got a new job in the last month it’s not as stressful as my old job but I work 12 hour shifts 4-5 days a week depending if I volunteer for extra shifts

I also lost quite a bit of weight. Before working there I weighed on average 113-115 lbs

Now I’m averaging about 108-110

Should I be worried theres something wrong with my health and go to a doctor?