At what point does a headache become a concern?

Question

Iv had a headache that I can’t shake all day. It’s not really severe but it’s enough for me to constantly know it’s there and sulk about it. 🙁
Iv taken paracetamol and drank a ton of water but it’s just not shifting. I’m thinking about getting some sleep and if it’s still there tomorrow contacting the midwife. 
Currently 26+4

Answer

Try a little caffeine. It’s been helping with mine

Answer

Sadly it’s a symptom for some women. I suffered from them my last 2 pregnancies. I just lay down. Thankfully I’m 36+5 & almost done because I’m over these headaches.

Answer

Yeah I had constant headaches I actually stopped drinking Coca Cola and started back drinking it and haven’t  had one since caffeine does work

Answer

I've had a headache for 3w now. My doctor made sure I didn't have pre e, when that came out all Gucci she suggested I get a massage but said it's ok and not an issue

At what point does a headache become a concern?

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