Ok so I've been having sex with my boyfriend and about two months ago it happened without condom, but for about 2 minutes. I'd been having pills to avoid pregnancy but I had skipped one about a week before that. I grew paranoid, my periods have been regular after that and I have had 5 home tests already, all negative. However I'm still paranoid. I've been having nausea and feeling light weighted, I think my sense of smell is better and I feel fatter (however when I stop thinking about it I go back to my "normal belly". My boobs hurt for like a day. So am I pregnant or just paranoid and making theses symptoms up?

There's no way to know. The symptoms of pregnancy are very similar in many ways to your cycle, and worry can just magnify them. If I had to guess, I'd say you aren't pregnant. But don't forget a pill each day. Put them in a spot where you won't forget, not by your bed, if that's where you have sex and think 'I'll take it afterwards', LOL.

But the regular periods and negative tests makes it unlikely, right?

This happened two months ago, so for these too months are you having your period, or have you missed them, If you are pregnant you will be missing ( not having) your period.

My periods have come regularly. All signs would tell me I'm not however I've been experiencing almost ALL symptoms (better sense of smell, constant urination, nausea and fatigue). Is there any chance of me beign pregnant considering the periods, negative tests, the fact that he didn't ejaculate and the pills?

Most likely your fear is making you think or feel like you have signs,

But if you want to be 100 percent sure, go to doctor for a blood test.

But two periods after sex and negative home tests, you are not pregnant.

Yes, there's a slight chance. Some women do have a period or even more than one. Some women don't test positive.
But you are also giving us some symptoms of things like diabetes, pre-menstrual syndrome, and just plain stress. See a doctor about the possible diabetes and while there, get a blood test too. Symptoms are just signs, not a diagnosis.