pregnancy? allergies? anxiety?

Hey ladies. I'm 13 weeks pregnant with my third child. My nausea has gotten better. Today at church my face started to feel hot (no fever) and I feel so tired. I do get pretty bad allergies this time of year ragweed/mold. I also did drink a cup of regular coffee before church today which I haven't had in weeks. I can't tell if I feel sickish due to just pregnancy my allergies and anxiety of "will I get sick in front of all these ppl." All my labs are normal. My eyes feel sore/dry and ears a little stuffy. Do you think it's a combination of things? I do tend to get health related anxiety. Thanks in advance for your kind responses