Am I pregnant?

Hi girls... well, it’s the first time I post in here, but I really would like to know if any of you had been through something like this as well...

So... when my son was born 7 years ago, I was diagnosed with cancer... I did quimo and after a few years, when the doctor cleared me, of course, we tried for another baby, unsuccessfully... we asked the doctor if it was the cancer and they said it was impossible to know... we asked if I was suffering from infertility because of quimo and they said it was not 100% sure, so we should try til we got pregnant, or not... until now, and after trying for a few years now, I couldn’t get pregnant... with my first kid was the first time we tried... so I basically said to my husband I didn’t want to try anymore, because it’s just so frustrating and depressing every test we did came negative, and he was ok with that... of course we still had sexual activity, we just stopped trying for a baby..

Anyway, now, this month, I had my period for 7 days, beginning of the month, ovulated already last week, but I’m not feeling myself... I have this horrible cramps felt in the bottom of my belly, always hungry and thirsty, very very tired and this weird headache, but a very subtil one, you know? That ones just to remind you they are there but not strong enough to take pills... and my boobs are so sensitive, and they hurt... I haven’t done a test yet, avoiding the disappointment of a negative test for a bit... but I don’t know what to think... had you felt like this before? This symptoms? Sorry for the long post... and thank you all.