Ate McDonald’s when pregnant

I just had McDonald’s, just a small cheese burger and some fries and I just feel so guilty eating this way pregnant. I gained so much weight already I have no idea how because I eat pretty good, fruit and veggies every day. Once in a while I will give into my cravings but never in a crazy way. I’m 6 months pregnant and this is only the second time I’ve had McDonald’s and I just feel so guilty.

I’m a first time mom so this is all new to me and my weight gain has been scary. Like 20th pounds so far almost 25. Ugh. Am I over thinking and should I just relax?