might be pregnant considering abortion late period

I think I might be pregnant on dec 30 I had sex with a condom and everything was find but then he texted me that I should take a plan but I had some complications with getting the funds so I didn't plus I was sure I wasn't pregnant but now my period is suppose to be here and it's no we're to be found I took a pregnancy test yesterday and it said negative i wanted to 2 weeks I think I have another test to take next friends and I've also been doing abortion research if you guys have any helpful information it would be greatly appreciated also should I be scared also if it helps my period is a but irregular but it hasn't been lately