Headaches

So I had a miscarriage in September last year and all I can think about is how I had constant headaches. Like every day and Tylenol did nothing for me. Now I’m not having headaches everyday but I woke up with one today and it’s nagging on. I’ve downed three 16.9oz water bottles so I know I’m getting enough water and I ate breakfast and took my prenatal like normal. But I’m just worried that I’m going to go for this ultrasound tomorrow and they’re gonna tell me there’s no heartbeat. Everything I’ve googled says headaches are normal. But is there any way there was a connection to my headaches and my last miscarriage?