Strange symptoms

[slk]

So my DH and I have been trying to conceive for around 3 years but we aren't stressed about it. Ever since coming off bc I have been very regular, my cycle is 25-27 days long. I took progesterone supplements for 2 months and didn't get pregnant but I did not take them last cycle. I had my period as usual (it's always very light) then the next week I was somewhat nauseous at times and at day 12 I got a weird headache behind my ears, I've started having jaw pain, and my wrists have been hurting. Then I started my period on day 17. Could these be pregnancy symptoms? I've never felt this weird and my cycles have worked like clockwork.