Headache

Hi. I am 14 weeks pregnant. I continue getting headaches. Im in the 2nd trimester now so I thought my fatigue would lighten up but since these headaches I don’t feel like doing anything. When I do sleep I get nightmares and it seems like I’m not getting much sleep after all. I’ve tried Tylenol and showers. I also take unisom as well before bed. I’m not sure what else I can do. I have an appointment on Tuesday to be measured and hear the heartbeat for the very first time so I am excited about that. I’m trying to relax. My headaches seem to affect the top of my head with pain in the back of my head near the neck. Any body have any advice that might provide some relief? I would greatly appreciate it.