To sum it up: since last sunday (today is friday) every time I go to sleep I notice, when I wake up, what I believe are bed bugs bites on my body. They're red spots of various sizes, some flat and some swollen (these are itchy), some even with a very tiny red puncture mark at the center of the spot. They're mainly on my legs and feet but I also have a few on my neck and breast. 

I showed them to my family doctor and he said they can't be bed bugs bites cause they don't have a white part in the center or something like that? And also cause I seem to be the only one affected in my house (I live with my parents) and we haven't seen any bug. He believes they're a skin reaction due to stress or something I ate.
I want to trust him cause sure, maybe stress could be an explanation, but why do I only get them at night? And can stress hives/bumps/spots/whatever they're called potentially appear in any part of the body and be of various sizes? 

I don't think it can be anything I ate cause I'm not allergic or sensitive to anything and I haven't eaten anything I don't normally eat. 
Can't be fleas cause I don't have pets and the people around me don't have them either nor interact with any in any way. 
The only other thing I can think of is a collateral effect of the dydrogesterone pills I'm taking, but that seems a little too far fetched to be honest...

Should I consult an actual dermatologist in real life? If anyone reads this and has any suggestions I'd be grateful to hear them!

Are these bed bugs bites or maybe a skin reaction to something?