ttc #1 questions & CONFUSED

[Mylee]

I'm not really versed in the abbreviations on here & I'm not even sure I'm posting in the right place for my questions, but here it goes. My boyfriend and I have been trying to conceive for a little over a year now. He had had stomach cancer when he was younger (around 4) and had to get chemo and radiation. They told his mom there was a chance he wouldn't be able to have children. He doesn't have insurance right now so getting tested is pretty much out (to expensive). I have insurance and have recently had a vaginal ultrasound ( 3 months ago) and everything came back normal. I have been keeping track of my periods and trying to figure out when I'm ovulating. I'm pretty sure that I had it right this month (due to cervical mucus & slight cramping on one side) and we had sex 2 days before the signs and twice during. Wednesday morning around 3am I woke to use the bathroom and when I laid back down the room started to spin. I have never had this happen to me before. I fell back to sleep and woke at 7 to the same thing when I rolled over. I've been a little light headed since, with the room spinning sometimes when I wake up in the morning. I've had slight nausea, which was the worse on the wednesday & caused me to gag. I had slight stomach pains and abdominal pains and I haven't had much of an appetite and my blood pressure is up. I've also been going to the bathroom a lot lately (both #1  sorry for tmi). I took a test yesterday and it came back negative, but I'm not due for my period till the 25th. Any help or advice would be greatly appreciated. I don't want to get my hopes up, but it's hard. Thanks for listening